Siĕmréab, additionally spelled Siem Reap, city, northwestern Cambodia. It lies along the Siĕmréab River and is connected to Phnom Penh, the national capital, and neighboring zones by a national parkway. The town has a pharmaceutical generation focus, a hoard rearing office, agrarian apparatus workshops, a crocodile ranch, and a global air terminal. Only north of Siĕmréab are 40 square miles (105 square km) of remnants of the premodern Khmer capital, Angkor (or Angkor Thom), which incorporates the amazing sanctuary complex of Angkor Wat. Pop. (1998) 83,715; (2008) 168,662.