The Castle of São Jorge (Portuguese: Castelo de São Jorge; Portuguese pronunciation: [kɐʃˈtɛlu dɨ sɐ̃w̃ ˈʒɔɾʒ(ɨ)]) is a Moorish castle that occupies a commanding position overlooking the city of Lisbon, the capital of Portugal, and the broad Tagus River (Portuguese: Rio Tejo) beyond. The strongly fortified citadel, which, in its present configuration, dates from medieval times, is located atop the highest hill in the historic center of the city. The castle is one of the main historical and touristic sites of Lisbon.