Lisbon (Lisboa) is the capital and largest city of Portugal, with an estimated population of just over half a million people (2023) . It is mainland Europe's westernmost capital city and the only one along the Atlantic coast. The city lies in the western portion of the Iberian Peninsula, and on the northern shore of the River Tagus.

Lisbon is one of the oldest cities in the world and the second-oldest European capital city (after Athens), predating other modern European capitals by centuries. It is known for its charming old neighborhoods, colorful architecture, old-fashioned trams, delicious food, and rich history.