Côn Đảo Prison (Côn Sơn Prison)

Côn Đảo Prison, also referred to as Côn Sơn Prison, was constructed in 1861 by French colonial authorities to confine those considered especially dangerous to the colonial government. During its operational history it held many high‑ranking Vietnamese political prisoners. The complex is best known for its "tiger cages," a punitive cell block noted in source descriptions with specific measurements and a stated count of 120 cells. After the end of the Vietnam War the facility was closed as a prison and opened to visitors; it has been designated by the government of Vietnam as a special historical relic of national importance. The supplied sources do not include named supernatural entities, witness accounts of paranormal phenomena, or investigatory theories; archival intelligence summaries included among the sources likewise contain no paranormal material about the site in the provided excerpts. Documentation in the sources focuses on the site's history, architecture (notably the tiger cages), and heritage status rather than folklore about hauntings.