The colorful castle of Palacio da Pena, UNESCO World Heritage Site, on top of hill Sao Pedro de Penaferrim, Sintra, Lisbon district, Portugal, Europe

photography colour colour image color color image horizontal horizontal image outdoors outside day nobody no one no one travel travel destination travel destinations tourist destination landmark landmarks famous well known well known castle palacio da pena unesco unesco world heritage site world heritage site hilltop sao pedro de penaferrim sintra lisbon district portugal portuguese europe european building exterior building buildings architecture architectural romanticism palace fort forts fortified fortification fortress fortresses majestic tower history historical historic heritage medieval tree forest elevated view