Section 1 at the Remembering the Killing Fields Exhibit, Chicago The Remembering the Killing Fields exhibit opened in 2011 and is a permanent exhibit at the National Cambodian Heritage Museum (formerly known as the Cambodian American Heritage Museum) in Chicago. The first section of the exhibit, “Clearing the Cities,” documents the Khmer Rouge take over of Cambodia, seizing Phnom Penh (the capital city) and forcing all urban residents into rural areas where they would be separated from families and forced into labor camps. (Cambodian Association of Illinois)