The Pena National Palace (Portuguese: Palácio Nacional da Pena) is a Romanticist palace in São Pedro de Penaferrim, in the municipality of Sintra, Portugal. The palace stands on the top of a hill 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.