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. The palace is a UNESCO World Heritage Site and one of the Seven Wonders of Portugal. Source: https://en.wikipedia.org/wiki/Pena_Palace