I told you I had to get to this place again. Still not happy with the result, but couldn't do better than this. Here's some information about it:
In the town of Sintra, the Quinta da Regaleira, an extremely beautiful architectural complex, includes an early twentieth century palace and a garden. Specialists consider that the estate reveals and symbolises Masonic rituals, although no-one knows whether the original owner of the estate, António Carvalho Monteiro, actually practised Masonic rituals on the site, or simply desired to perpetuate the imaginary universe of this secret cult. The garden includes labyrinthine galleries and subterranean grottoes, which can be accessed from this dry well, 60 metres deep, 9 stairwells each with 15 steps.