Places starting with "O"
Odense Zoo
Odense Zoo is a zoological garden in Denmark located in the city of Odense on the island of Funen. The site functions as a regulated zoological institution with a curated living collection and plays a regional role in animal husbandry, education, and conservation practice. Its grounds occupy landscaped urban parkland within Odense municipality and the site includes purpose-built enclosures and public-facing animal care facilities. This formal status distinguishes Odense Zoo among Danish zoological collections.
O'Hare International Airport
O'Hare International Airport is a major international airport in the United States located within the municipal boundaries of the City of Chicago, Illinois. The facility occupies roughly 7,627 acres and is sited at approximately 41.9742°N, 87.9073°W, featuring eight runways and a complex of four numbered passenger terminals. O'Hare International Airport is significant as a principal air transport and cargo node with a long-standing role in national airline networks and regional economic infrastructure.
Ohio Stadium
Ohio Stadium is a stadium in the United States situated on the main campus of The Ohio State University. It serves as the primary home venue for the university's intercollegiate football program and is notable for its bowl-shaped seating enclosing a standard American football playing surface. The site functions as a large-capacity university stadium owned by the institution and forms a prominent built landmark within the university's campus infrastructure.
Oji Zoo
Oji Zoo is a municipal zoo in Kobe, Japan, formally operated by Kobe City within its urban park system. The site occupies a defined park parcel inside Oji Park and functions as a combined zoological and botanical collection under municipal governance. Its measurable, formally defined fact is municipal operation, which places responsibility for animal care, grounds maintenance, and public programming with city authorities. The zoo’s established role serves regional conservation and education mandates.
Okavango Delta
Okavango Delta is an inland river delta in northwestern Botswana where the Okavango River disperses into the Kalahari Basin. It is one of the world's largest inland deltas and a globally significant freshwater wetland system. The delta covers about 15,000 square kilometres of wetland, channels and seasonal floodplain that support diverse habitats. Researchers study its flood pulse and habitat mosaics because they sustain high biodiversity and underpin local livelihoods and ecosystem services.
Okinawa Beaches
Okinawa Beaches is a collective name for the sandy, rocky, and coral-fringed shorelines of Okinawa Prefecture in Japan. It occupies coastal areas within the Ryukyu Islands chain and borders the East China Sea and the Philippine Sea. The area includes coastlines that extend across several hundred kilometers and supports extensive fringing coral reefs and nesting sites for marine turtles. Okinawa Beaches is significant for its ecological diversity and its role in regional maritime history.
Old City of Jerusalem
Old City of Jerusalem is a walled historic quarter at the core of the modern city of Jerusalem in Israel, notable for its religious and cultural density. The Old City covers roughly 0.9 square kilometres and is enclosed by a continuous stone wall about four kilometres in length. It contains major sites central to Judaism, Christianity and Islam, and it serves as a focal point for archaeology, heritage studies, and interfaith scholarship.
Old Faithful
Old Faithful is a prominent cone geyser in Yellowstone National Park, Wyoming, United States. It is a hydrothermal vent that produces frequent, high vertical eruptions, making it a widely recognized geothermal feature. Old Faithful typically projects water columns reaching about 32 to 56 meters and discharges thousands of liters per eruption, which contributes to its scientific value. This predictability and measurable eruption behavior underlie Old Faithful’s significance for geothermal research and public awareness of geothermal phenomena.
Old Havana
Old Havana is the historic central district of Havana, Cuba, encompassing the city’s earliest urban fabric and principal colonial monuments. It forms the core of Havana’s original settlement and preserves an ensemble of public plazas, churches, and administrative buildings. The district is formally organized around four principal public squares, which provide a measurable framework for its historic urban plan and heritage studies. Old Havana is significant for its concentration of colonial-era architecture and its role in Atlantic maritime history.
Old Jaffa
Old Jaffa is a historic coastal district of the Tel Aviv-Yafo municipality in Israel. It functions as the city’s historic port quarter and a formally designated urban district within municipal boundaries. The district occupies a measurable limestone headland on the eastern shore of the Mediterranean Sea at approximately 32.05°N, 34.75°E. Its significance derives from sustained urban occupation, archaeological depth, and a distinct built environment within Tel Aviv-Yafo.
Old Masters Picture Gallery Dresden
Old Masters Picture Gallery Dresden is a museum in Germany that houses a major historic collection of European easel paintings. It occupies gallery spaces within the Zwinger palace complex and is administered as part of the Staatliche Kunstsammlungen Dresden. The collection focuses on works produced primarily between the fifteenth and eighteenth centuries, providing a measurable curatorial scope that defines the institution’s scholarly remit and exhibition program.
Old Quarter Luang Prabang
Old Quarter Luang Prabang is a historic district in the town of Luang Prabang, in the country of Laos. The district constitutes the town’s core historic fabric and is formally part of the Luang Prabang World Heritage inscription, occupying the central area between the Mekong River and the Nam Khan River. The district is identified by a concentration of traditional Lao residences, Buddhist monasteries, and colonial-era buildings that together form a measurable urban nucleus within the municipal boundary.
Old Riga
Old Riga is the historic core of Riga, Latvia, known locally as Vecrīga. It is the city's principal concentration of medieval and early modern buildings and public squares. The district's built fabric includes major civic and religious structures that shape Riga's urban identity. Its formal name and preserved urban pattern make it a central subject in studies of Baltic urban history and heritage.
Old Town Dubrovnik
Old Town Dubrovnik is the historic, walled core of the city of Dubrovnik on Croatia’s Adriatic coast, noted for its intact fortifications and urban fabric. It functions as the preserved medieval centre around a compact street grid and monumental civic buildings. The main defensive walls surrounding Old Town Dubrovnik extend approximately 1,940 metres in continuous ramparts. Its location, discernible building materials, and conserved street plan together demonstrate the site’s history and cultural significance.
Old Town of Tallinn
Old Town of Tallinn is the medieval historic centre of Estonia's capital, notable for its exceptionally preserved urban fabric and civic architecture. It comprises the fortified Toompea hill and the contiguous Lower Town beside Tallinn Bay, forming a compact historic district. The area was inscribed on the UNESCO World Heritage List in 1997, a formal designation recognizing its cultural value and the integrity of streetscapes, defensive works, and merchant buildings. Its concentration of medieval structures makes it central to studies of Hanseatic urbanism in Northern Europe.
Old Trafford
Old Trafford is a stadium in the United Kingdom that serves as a major venue for association football and large-scale sporting fixtures. The facility is formally designated as an association football stadium within the country's sports governance framework and occupies a defined urban parcel with spectator stands, media facilities, and an enclosed natural grass playing surface. Old Trafford functions as an established sports infrastructure node within its metropolitan area, hosting regulated competitive matches and club operations.
Olinda
Olinda is a coastal municipality in the state of Pernambuco, Brazil, noted for its well-preserved colonial urban landscape and cultural heritage. The municipality covers approximately 41.68 square kilometers of territory on the Atlantic shore. The municipality forms part of the Recife metropolitan area and retains a compact historic center characterized by steep streets, churches, and secular residences. Its significance derives from a concentration of colonial-era architecture and living cultural traditions that contributed to regional identity.
Oltrarno
Oltrarno is a district of Florence, Italy, situated on the south bank of the Arno River. It is formally recognised as a quartiere within the Comune di Firenze, occupying the riverine sector opposite the city’s medieval and Renaissance core and forming a distinct administrative and urban unit within Florence’s municipal framework.
Olympic Museum
Olympic Museum is a museum in Switzerland dedicated to the material culture and history of the modern Olympic Movement. It is sited in Lausanne and managed by the International Olympic Committee, giving it an institutional connection to Olympic governance. The campus comprises indoor exhibition galleries linked to outdoor sculpture gardens and terraces, and its collection profile emphasizes objects, medals, torches, and audiovisual archives as primary research and display assets. This institutional status frames its long-term preservation role.
Olympic National Park
Olympic National Park is a United States national park on the Olympic Peninsula in Washington state. It protects an area of approximately 922,650 acres and holds continental-scale assemblages of temperate rainforest, alpine wilderness, and Pacific shoreline. The park is significant for containing Mount Olympus with persistent glaciation, large tracts of old-growth forest dominated by Sitka spruce and western hemlock, and formally recognized international conservation designations. This article emphasizes geography, physical form, and long-term stewardship.
Oman
Oman is the Sultanate of Oman, a sovereign state on the southeastern edge of the Arabian Peninsula that combines desert interior, a rugged mountain spine and more than 3,000 kilometers of coastline. The country’s significance rests on its long maritime history and its formal status as a hereditary sultanate with a modern administrative apparatus. Economically it has relied on hydrocarbons while pursuing diversification into fisheries, mining and logistics. The nation’s character is shaped by a compact urban center, extensive expatriate labor, and distinctive institutions that reflect a blend of tribal, Islamic and seafaring traditions.
Omar Ali Saifuddien Mosque
Omar Ali Saifuddien Mosque is the national mosque of Brunei, located in Bandar Seri Begawan. It serves as the country’s principal state mosque and a formal symbol of Bruneian Islamic identity and governance. The building functions as a central religious and ceremonial site for national observances and state-related religious activities. Its formal designation as the national mosque establishes its prominent institutional status within Brunei’s religious architecture.
Ometepe Island
Ometepe Island is a volcanic island in Lake Nicaragua, Republic of Nicaragua, defined by two prominent stratovolcanoes and notable archaeological remains. The island covers approximately 276 square kilometers and includes the volcanoes Concepción and Maderas, with summit elevations near 1,610 and 1,394 meters respectively. Ometepe Island is significant as a compact setting where active volcanism, freshwater-lake processes, and substantial pre-Columbian cultural deposits occur within a single island landscape.
Omo Valley
Omo Valley is the river valley of the Omo River in southwestern Ethiopia and a major corridor of cultural and paleoanthropological significance. It stretches along the lower river course and is associated with extensive floodplains and stratified archaeological deposits. The Omo River itself is approximately 760 kilometers long. The valley supports a concentration of indigenous ethnic communities and scientific research sites that together underline its long-term importance for studies of human evolution, cultural diversity, and riverine ecosystems.
Oracle Park
Oracle Park is a Major League Baseball stadium in the United States occupying a prominent waterfront location in San Francisco, California. The stadium sits at approximately 37.7786°N, 122.3893°W, has an official seating capacity near 41,915, and opened in 2000 after late-1990s construction. Oracle Park serves as the long-term home field of the San Francisco Giants and anchors the South Beach neighborhood. Its waterfront placement and brick-and-steel retro design contribute to its architectural significance among contemporary American ballparks.
Oregon Zoo
Oregon Zoo is a managed zoological collection and public scientific institution in the United States. Located in Portland’s Washington Park and operated by Metro, it holds formal accreditation from the Association of Zoos and Aquariums. The institution maintains a permanent living collection, participates in cooperative conservation programs, and serves as a regional center for captive-animal husbandry, veterinary care, and species management. This combination of governance and accreditation defines its institutional status and measurable responsibilities.
Orheiul Vechi
Orheiul Vechi is an archaeological and cultural landscape in central Moldova, defined by a limestone gorge carved by the Răut River. The site combines rock-cut monastic structures and surface settlements with approximate coordinates 47.33°N, 28.82°E. Orheiul Vechi is significant for its long sequence of human occupation preserved in stratified archaeological deposits and for a visually prominent cliff face rising roughly 40 meters above the riverbed. The location informs studies of regional settlement patterns and monastic architecture.
Orientarium Zoo Lodz
Orientarium Zoo Lodz is a purpose-built tropical and aquatic pavilion affiliated with the municipal Łódź Zoo in Poland. It serves as the zoo’s centralized indoor facility for Asian and aquatic ecosystems and is a formal unit within the zoo’s institutional collection and stewardship framework. The complex contains integrated aquarium and terrestrial exhibition spaces under a single controlled envelope, and it is administered by the city’s zoo authority as part of the institution’s long-term species management responsibilities.
Orlando International Airport
Orlando International Airport is a commercial international airport in the United States, located in Orlando, Florida. It is designated IATA code MCO and ICAO code KMCO and sits at approximately 28.4312° N, 81.3081° W on roughly 13,000 acres of airport property. Orlando International Airport serves as the principal aviation gateway for Central Florida and retains core infrastructure originally associated with the former McCoy Air Force Base.
Orléans
Orléans is a city and commune in north-central France that serves as the prefecture of both the Loiret department and the Centre-Val de Loire region. Built on the Loire River about 120 kilometres southwest of Paris, it combines a regional administrative role with a river-based urban history. The city’s public identity is also shaped by the siege of 1429 and its continuing annual commemoration of Joan of Arc. Its university, tram system, bridges, museums, and former trading functions connect those historical associations to present-day civic life.
Ortakoy
Ortakoy is a neighborhood in the Beşiktaş district of Istanbul, Turkey. It occupies a waterfront position on the European shore of the Bosphorus and is administratively part of Beşiktaş municipality, giving it a defined municipal status within Istanbul's governance. The area is formally identified by its waterfront square and the Büyük Mecidiye Mosque, a prominent Ottoman-era stone mosque sited at the water's edge. Ortakoy's combination of civic institutions and shoreline architecture defines its local role.
Osaka Castle
Osaka Castle is a historic Japanese flatland castle (hirajiro) situated in the central part of Osaka City, Japan. It serves as a prominent landmark associated with the Toyotomi clan and the political consolidation of late sixteenth-century Japan. The site is formally classified as a hirajiro in Japanese castle typology, and its central complex is characterized by a conspicuous main tower, extensive concentric moats, and large stone fortifications that define its historical footprint.
Osaka Station
Osaka Station is a major railway station in Japan, serving as a principal JR passenger hub in central Osaka. It is located at approximately 34.7025°N, 135.4959°E in Kita-ku and is operated by West Japan Railway Company (JR West). The facility functions as a through-station for multiple JR lines, provides extensive interchanges with adjacent private rail and subway complexes in the Umeda district, and forms the core of the multi-building redevelopment known as Osaka Station City. Its operator status and geographic coordinates are formal, verifiable facts that define its transport role.
Osaka University
Osaka University is a national public research university in Japan with origins as Osaka Imperial University, formally founded in 1931. The institution is significant as a large, multidisciplinary research and teaching university that operates multiple urban campuses in Osaka Prefecture and maintains an affiliated university hospital and university museum. Osaka University is governed as a National University Corporation, and it is formally organized into numerous faculties, graduate schools, and research institutes that define its role in higher education and applied research within the Kansai region.
Oscar Niemeyer Museum
Oscar Niemeyer Museum is a museum in Brazil. It is located in the city of Curitiba, in the state of Paraná, and is notable for a modernist complex associated with architect Oscar Niemeyer. The complex includes an elevated, eye-shaped gallery that projects over a reflecting pool, a concrete form that visibly links sculptural architecture with exhibition spaces. The institution functions as a municipal museum dedicated to modern and contemporary visual culture and architectural discourse.
Osh Bazaar
Osh Bazaar is a major traditional market in Bishkek, the capital city of Kyrgyzstan, specializing in wholesale and retail trade. The market hosts several hundred permanent stalls and numerous temporary vendors beneath covered arcades and open courtyards. It functions as a primary urban supply center for fresh produce, dried fruits, textiles, and household goods, linking rural producers with city consumers. The scale of Osh Bazaar and its continuous commercial role make it one of Kyrgyzstan's most prominent marketplaces.
Oslo
Oslo is the capital city of Norway, located at the head of the Oslofjord on the country’s southeastern coast. It is Norway’s principal political and economic centre and has a municipal area of about 454 square kilometres. Oslo is the seat of national government, a concentration of cultural institutions, and a regional hub for maritime and energy-related industries. The city combines urban functions with adjoining woodland and island landscapes.
Oslo Airport Gardermoen
Oslo Airport Gardermoen is an international airport in Norway serving the capital region and national air traffic. The airport sits on the Gardermoen plain north of Oslo and functions as the principal civil aviation hub for the metropolitan area; it has two parallel runways and a single integrated passenger terminal complex. The site is operated under national airport governance and handles both domestic and international scheduled services as part of Norway’s transport infrastructure.
Ostermalm
Ostermalm is a district in the central area of Stockholm, Sweden. It functions as a formal district within Stockholm Municipality and occupies part of the city's eastern inner core, containing prominent public squares and a historic enclosed market hall. The district is significant for its concentration of late-19th and early-20th-century urban housing, its role in Stockholm's civic institutional layout, and its position along a major waterfront boulevard that defines part of the city’s urban edge.
Ostrava Zoo
Ostrava Zoo is a zoological garden in the city of Ostrava in the Czech Republic. The institution maintains a curated living collection distributed between climate-controlled pavilions and open-air enclosures, a concrete operational fact that structures its husbandry and exhibit planning. The zoo functions as a public scientific collection with roles in regional animal management, captive-breeding, and species-display that connect municipal stewardship with conservation practice.
Otaru
Otaru is a port city on the island of Hokkaido in northern Japan, notable for preserved mercantile heritage and coastal urban form. It functions as an administrative municipality within Shiribeshi Subprefecture and covers 243.83 square kilometers. Otaru holds significance for documenting Japan's nineteenth- and early-twentieth-century economic expansion through surviving merchant streets, warehouse districts, and craft industries. The urban footprint concentrates along Ishikari Bay at the western edge of Hokkaido's coastline.
Ottawa
Ottawa is the capital city of Canada and the seat of the federal government, centered at Parliament Hill. It lies where the Ottawa River meets the Rideau Canal and spans roughly 2,800 square kilometres, containing about one million inhabitants. Ottawa is significant for its concentration of national institutions, federal architecture, bilingual public administration, and protected ceremonial landscapes that together define its formal role in Canada’s political and cultural framework.
Ouagadougou
Ouagadougou is the capital city of Burkina Faso and the administrative center of the national government. The city sits on the country’s central plateau, combining political, cultural, and economic roles within a single urban area. Its mean elevation is about 305 metres above sea level, a concrete measurable attribute used in topographic and planning documents. Ouagadougou functions as a focal point for national institutions and regional coordination in west-central West Africa.
Oualata
Oualata is an oasis town in southeastern Mauritania that served as a medieval trans‑Saharan caravan center and manuscript repository. It is located within Mauritania and is recognized for its distinctive mud‑brick architecture and painted facades. As a concrete fact, Oualata forms part of the UNESCO World Heritage listing for the Ancient Ksour of Ouadane, Chinguetti, Tichitt and Oualata, inscribed for its cultural value. The town’s long continuity links regional trade networks and Saharan settlement patterns.
Ouro Preto
Ouro Preto is a historic city in the Brazilian state of Minas Gerais notable for its colonial-era urban fabric and mining past. It occupies a compact urban area perched on steep hills within a mineral-rich highland region of southeastern Brazil. The municipal seat stands at about 1,116 meters above sea level, a measurable topographic fact recorded in geographic databases. Ouro Preto's significance derives from its concentration of preserved colonial buildings and tangible evidence of large-scale eighteenth-century gold extraction.
Ouwehands Dierenpark
Ouwehands Dierenpark is a zoo in the Netherlands located in the town of Rhenen, province of Utrecht. The park is sited on municipal land within Rhenen and is notable for its hillside setting on the Grebbeberg ridge and for hosting a purpose-built giant panda enclosure within its collection. Ouwehands Dierenpark functions as a managed zoological institution that combines species collection, public display, and participation in conservation programs.
Ouzoud Falls
Ouzoud Falls is a multi-tiered waterfall complex in central Morocco that forms a prominent fluvial landmark. It occupies a notable location roughly 150 kilometres northeast of Marrakech and commands attention for its geological form and ecological role. The cascade system consists of several successive drops feeding into the El Abid River gorge, and it figures prominently in regional hydrology and landscape studies. The site combines vertical relief with surrounding escarpments and cultivated terraces.