Tuol Sleng Genocide Museum (Cambodia) – Location, Geography, Facts

Tuol Sleng Genocide Museum is a national museum in Cambodia that documents mass detention and state violence carried out at a site in Phnom Penh.

Tuol Sleng Genocide Museum, Cambodia.

Country: Cambodia
Coordinates: 11.5494° N, 104.9178° E

Tuol Sleng Genocide Museum overview

Tuol Sleng Genocide Museum is a national museum in Cambodia that documents mass detention and state violence carried out at a site in Phnom Penh. The institution occupies the compound of a former secondary school that was converted into a detention and interrogation center known as Security Prison 21, and it retains original cells, documentary archives, and photographic records as preserved material evidence. The museum functions as a formal repository for those documentary collections and for preserved building fabric.

Tuol Sleng Genocide Museum coordinates

Tuol Sleng Genocide Museum is commonly mapped at approximately 11.5494° N, 104.9178° E, or 11.5494, 104.9178 in decimal degrees.

Degrees: 11.5494° N, 104.9178° E

Decimal: 11.5494, 104.9178

Where Tuol Sleng Genocide Museum is located

Located in the central area of Phnom Penh, the museum sits within the municipal boundaries of Cambodia’s capital amid dense urban blocks. The compound is set inland from the main riverfront and is enclosed within high concrete walls that face surrounding streets and residential properties. The site lies in the civic and institutional sector of the city rather than in a rural setting, and the museum’s built envelope occupies the footprint of the former school campus within the urban grid.

Why Tuol Sleng Genocide Museum is important

The museum’s significance derives from its status as the original site of Security Prison 21 and from the survival of primary material evidence on the campus. Tuol Sleng Genocide Museum preserves a large photographic archive of prisoner portraits and documentary records created at the site, coupled with the retained physical setting of classrooms converted to cells and interrogation rooms. This combination of in situ architecture and documentary collections distinguishes the institution as both an architectural testimony and an archival repository for accountability and historical research.

History of Tuol Sleng Genocide Museum

The site began life as a school campus before being seized and repurposed as a central detention center during a period of revolutionary governance in Cambodia; classroom blocks and ancillary buildings were transformed into cells, offices, and interrogation spaces. After the end of the prison’s operation, the compound was conserved as a museum to retain evidence of its previous function and to house documentary materials generated there. Materials and images preserved on site were subsequently used as documentary evidence in judicial and historical examinations of mass violence, and the campus evolved into a curated institutional collection.

Natural features of Tuol Sleng Genocide Museum

The museum occupies a compact campus of former classroom buildings arranged around narrow courtyards and bounded by continuous concrete perimeter walls. Original structural materials include load-bearing brick and concrete blocks, with interior partitions converted into narrow concrete cells and metal-barred windows added to former classrooms. Distinctive observable elements include rows of small cell spaces formed within classroom footprints, corridors lined with photographic panels, and original interior surfaces that retain inscriptions and marks from the period of the site’s use as a detention center.

Environment, protection, and monitoring of Tuol Sleng Genocide Museum

Designated and maintained as a national museum under Cambodian governmental stewardship, the site is managed as both a built heritage property and an archival repository. Institutional caretakers implement conservation measures for paper-based records, photographic negatives, and fragile building fabric, and curators maintain catalogues and stabilized exhibits for long-term preservation. The museum’s management balances preservation of in situ architectural features with archival conservation of documentary material that remains subject to professional stewardship and institutional oversight.

Tuol Sleng Genocide Museum facts

The compound was originally a secondary school before being converted into the detention center known as Security Prison 21.
The museum occupies a walled urban campus in central Phnom Penh rather than an isolated memorial park.
Its collections include an extensive photographic archive of individual prisoner portraits and associated documentary records produced at the site.
Original classrooms were retrofitted into narrow concrete cells and interrogation rooms that remain visible in the museum layout.
The site has been maintained as a national museum and archival repository under Cambodian government stewardship.

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