The Pena Palace is a Romanticist castle in São Pedro de Penaferrim, in the municipality of Sintra, Portugal. The castle stands on the top of a hill in the Sintra Mountains above the town of Sintra, and on a clear day it can be easily seen from Lisbon and much of its metropolitan area. It is a national monument and constitutes one of the major expressions of 19th-century Romanticism in the world. The palace is a UNESCO World Heritage Site and one of the Seven Wonders of Portugal. It is also used for state occasions by the President of the Portuguese Republic and other government officials.HistoryThe castle's history started in the Middle Ages when a chapel dedicated to Our Lady of Pena was built on the top of the hill above Sintra. According to tradition, construction occurred after an apparition of the Virgin Mary.In 1493, King John II, accompanied by his wife Queen Leonor, made a pilgrimage to the site to fulfill a vow. His successor, King Manuel I, was also very fond of this sanctuary, and ordered the construction of a monastery on this site which was donated to the Order of Saint Jerome. For centuries Pena was a small, quiet place for meditation, housing a maximum of eighteen monks.