In the morning, you will visit the Tuol Sleng Museum, which was originally built as a secondary school named Tuol Svay Prey High School in 1960, then the Khmer Rouge converted this into a torture and interrogation centre to extract 'confessions' of anti-government sentiment. After that, you will visit the so-called ‘Killing Fields’ or the Choeung Ek Execution area which is 15km southwest of the city centre. The exhumed skulls of some 8,000 souls, arranged by sex and age, are displayed behind glass panels in the Memorial Stupa, which was erected in 1988. After that, you will be driven back to the city centre and have the rest of the day free. Tour ends.