Macau (澳門, 澳门, Àomén), also spelled Macao, is one of the two Special Administrative Regions of the People's Republic of China. Macau lies on the western side of the Pearl River Delta across from Hong Kong, which is about 64 kilometers to the east, and it is also bordered by Guangdong Province to the north and the South China Sea to the east and south.
Macau is one of the world's richest cities, and as of 2013 its GDP per capita by purchasing power parity is higher than that of any country in the world, according to the World Bank. It became the world's largest gambling centre in 2006, with the economy heavily dependent on gambling and tourism.