Changi Prison is a high-security facility located in Singapore. Originally built in 1936, it gained notoriety during World War II when it was used by the Japanese military to detain prisoners of war and civilians. The prison has since been renovated and is now known for its strict security measures and modern facilities. Today, Changi Prison serves as a correctional institution for serious offenders in Singapore. It is part of the Singapore Prison Service and focuses on rehabilitation programs to help inmates reintegrate into society. The prison is also known for its emphasis on discipline and order.