In an effort to connect her Cambodian-born adopted son with his heritage, Jolie purchased a house in his country of birth in 2003. The traditional home sat on 39 hectares in the northwestern province Battambang, adjacent to Samlout national park in the Cardamom mountains, which had become infiltrated with poachers who threatened endangered species. She purchased the park's 60,000 hectares and turned the area into a wildlife reserve named for her son, the Maddox Jolie Project. In recognition of her conservation efforts, King Norodom Sihamoni awarded her Cambodian citizenship on July 31, 2005.