Castelo de São Jorge Published 10/04/2013 at 480 × 640 in Portugal: Cascais, Lisbon and Sagres ← Previous Next → Castelo de São Jorge Built by the Moors in 11th century, conquered by the Portuguese in 12th century . Castelo de São Jorge is a Moorish castle occupying a commanding hilltop overlooking the historic centre of the Portuguese city of Lisbon and Tagus River.