Quinta da Regaleira - Sintra
Photos from http://www.regaleira.pt/
Quinta da Regaleira is located in Sintra, it is classified as a World Heritage Site by UNESCO.
There we can see a romantic palace, a luxurious park, lakes, grottoes, benches, fountains, a Roman Catholic Chapel, tunnels, 2 initiatic wells aka inverted towers used for ceremonial purposes like Tarot initiation rites.
Must be visited