Quinta da Regaleira is a quinta constructed from 1904 to '10 and located near the historic centre of Sintra, Portugal. It is classified as a World Heritage Site by UNESCO within the "Cultural Landscape of Sintra". Along with the other palaces in the area such as the Quinta do Relógio, Pena, Monserrate and Seteais palaces, it is considered one of the principal tourist attractions of Sintra.