The district of Lisboa is the Portugal's most populous, with about 2,124,426 inhabitants. With headquarters in the city of Lisboa, it belongs almost entirely to the traditional province of Extremadura, with the exception of the municipalities of Azambuja and Vila Franca de Xira, which belong to Ribatejo.
The capital of the district is Lisboa, the biggest city and capital of Portugal and is also the capital of Lisbon Metropolitan Area.
Lisboa had, in the Roman occupation of the Iberian Peninsula, the name of Olisipo, being that in the time was one of the most important cities of the Roman Lusitania, which had its capital in Emerita Augusta, the current Mérida, the spanish Extremadura.
The Roman Lusitania, included about all the current Portuguese territory,at south of the Douro River, the Spanish Extremadura and a part of the province of Salamanca. It became a Roman province since 29 BC, until the end of the connection with Rome and the delivered to the Alans, in 411.
In 1147, Lisboa was conquered by the King Afonso Henriques, the first King of Portugal and his army of crusaders. The King granted it a charter in 1179. The city became the capital of the kingdom of Portugal, in 1255, due to its strategic location.
