Lisbon is the capital of Portugal and the most populous city in the country. It has a population of 547,733 inhabitants within their administrative boundaries. In Lisbon Metropolitan Area, reside 2,821,697 people (2011) and is therefore the largest and most populous metropolitan area in the country. Lisbon is the political center of Portugal, seat of government and residence of the head of state. It is the «beacon of Lusophone» (Daus): the Community of Portuguese Language Countries (CPLP) has its headquarters in the city. It is also the capital further to the west of the European continent on the Atlantic coast.
The administrative status of the city was originally granted by the dictator Julius Caesar as a Roman municipality. The emperor proudly added the word «Olisipo» which gave rise to the name of Lisbon, the designation «Happiness Julia» (Felicitas Julia), in his memory.
Lisbon is considered as a global city because of its importance in financial, commercial, media, artistic, educational and tourism. It is one of the main economic centers of Europe, thanks to a growing financial progress favored by the largest port containers from the Atlantic coast of Europe and more recently by Humberto Delgado Airport, which receives more than 20 million passengers annually (2015). Lisbon has a network of motorways and high-speed rail system (Alfa Pendular) linking the main Portuguese cities to the capital. The city is the most visited seventh Southern Europe, after Istanbul, Rome, Barcelona, Madrid, Athens and Milan, with 1.74 million tourists in 2009, and in 2014 exceeded the mark of 3.35 million. Globally, Lisbon was the 35th city with tourist destination in 2015, about 4 million visitors. In 2015, it was considered the 11th most popular tourist city, ahead of Madrid, Rio de Janeiro, Berlin and Barcelona.
The Lisbon region is the richest country with a GDP PPP per capita of 26,100 euros (4.7% higher than the average GDP per capita of the European Union). Its metropolitan area is the twenty richest continent with a GDP-PPP worth 58 billion euros, equivalent to about 35% of GDP-PPP whole country. Lisbon ranks 122. th place among the cities with higher gross revenues of the world. most of the seats of multinationals in Portugal are in the region of Lisbon, the ninth city in the world with the highest number of international conferences.