hill with castle wall at the top and overlooking the tejo river, santarém portugal

hill castle wall top overlooking tagus river santarém portugal tejo vegetation green grass viewpoint portas sol leziria viewpoint tagus river tejo grass green mountain landscape architecture building leisure vacation medieval tourism famous old culture travel turret orange outdoor nature natural environment sky cloudy colorful branch autumn landmark sunlight golden hour sol sunset garden park leaves trees hill fortification fort castle walls santarem ribatejo ramparts portuguese portugal europe