Cambodia is a country in Southeast Asia whose landscape encompasses low-lying plains, the Mekong Delta, mountains, and the coast of the Gulf of Thailand. Phnom Penh, its capital, is home to the art deco-style Central Market, the gleaming royal palace, and the archaeological and historical exhibits of the National Museum. In the northwest of the country are the ruins of Angkor Wat, a massive stone temple complex built during the Khmer Empire.