Lisbon
Lisbon is one of the oldest cities in the world, and one of the oldest in Western Europe, predating other modern European capitals such as London, Paris, and Rome by centuries. Julius Caesar made it a municipium called "Felicitas Julia", adding to the name "Olissipo". Ruled by a series of Germanic tribes from the 5th century, it was captured by the Moors in the 8th century. In 1147, the Crusaders under Afonso Henriques reconquered the city and since then it has been a major political, economic and cultural centre of Portugal. Unlike most capital cities, Lisbon's status as the capital of Portugal has never been granted or confirmed officially – by statute or in written form. Its position as the capital has formed through constitutional convention, making its position as "de facto" capital a part of the Constitution of Portugal.
History of Portugal
Portugal traces its national origin to 24 June 1128, the date of the Battle of São Mamede. Afonso proclaimed himself "Prince of Portugal" after this battle and in 1139, he assumed the title "King of Portugal". In 1143, the Kingdom of León recognised him as King of Portugal by the Treaty of Zamora. In 1179, the papal bull Manifestis Probatum of Pope Alexander III officially recognised Afonso I as king. After the Battle of São Mamede, the first capital of Portugal was Guimarães, from which the first king ruled. Later, when Portugal was already officially independent, he ruled from Coimbra.