Saint George's Castle

Brief information

Saint George's Castle stands out not only as a fortress on a high hill. This place shows why Lisbon began precisely here: the height gave control over the city, and the steep slope descended from the fortifications toward the Tagus. During the Moorish period, historic Lisbon developed between the castle and the river; later this district received the name Alfama.

The site has been fortified since antiquity. It served as a fortress for the Romans, Visigoths, and Moors, and inside it was the residence of the Moorish emir. Later the castle became a royal residence and remained so until the construction of the Ribeira Palace on Commerce Square in the 16th century. For this reason, the place reads not as a single monument, but as a point where defense, power, and the city's growth long coincided.

What to notice right away

It makes sense to compare three things: the hill, the slope, and the fortified character of the place. The high position explains why the castle is visible from different parts of Lisbon and why the site was fortified by different rulers. The steep slope between the castle and the Tagus helps explain how the city grew downward from the fortified core toward the river, rather than around a separate palace.

The story of the capture in 1147 adds another angle of view: the city gates proved to be the decisive weak point in the defenses. The text does not say that those gates have survived, but the fact itself changes how the fortress is read: what matters in it is not only the walls and height, but also the points of entry. The transition from the emir's residence to a royal residence is also connected with the castle's layout: power occupied the protected summit until the palace was moved to Commerce Square.