Close up aerial view of Portugal and Lisbon flag waving in the wind on the top of Castelo de S Jorge Lisbon castle on top of the hill overlooking the sea

portugal flag lisbon castle lisbon flag portugal castelo de s jorge lisbon lisbon city castle on hill castle flag flags tourism european tourist destination aerial view europe city aerial monument city center historic historical landmark town tourist landscape establishing view sea travel landmark destination cityscape beautiful day downtown urban traditional houses old architecture houses colorful hills establisher street traditional