Lisbon is the capital and the largest city of Portugal with a population of 547,631 within its administrative limits on a land area of 84.8 square kilometres (32.7 sq mi). Perched on the edge of the Atlantic Ocean, Lisbon is one of the rare Western European cities that face the ocean and uses water as an element that defines the city. Lisbon enchants travelers with its white bleached limestone buildings, intimate alleyways, and an easy going charm that makes it a popular year round destination.