Inverted Initiation tower, Quinta da Regalia, Sintra, Portugal (b/w photo)

designed Luigi Manini; constructed between 1904 and 1910; The Initiation Wells are two wells on the property that better resemble underground towers lined with stairs. These wells never served as water sources. Instead, they were used for ceremonial purposes that included Tarot initiation rites. Tunnels connect the two wells to one another, in addition to various caves and other monuments located around the park. Of the two wells, the larger one contains a 27-meter spiral staircase with several small landings. The spacing of these landings, combined with the number of steps in the stairs, are linked to Tarot mysticism;