The Palace of Sintra (Portuguese: Palácio Nacional de Sintra), also called Town Palace (Palácio da Vila), is located in the town of Sintra, in the Lisbon District of Portugal. It is a present-day historic house museum. It is the best-preserved medieval royal residence in Portugal, being inhabited more or less continuously from at least the early 15th century to the late 19th century. It is a significant tourist attraction, and is part of the cultural landscape of Sintra, a designated UNESCO World Heritage site.