Polantis - The Inverted Tower in Sintra, Portugal. This underground tunnel with a spiral staircase, supported by curved columns, evokes references to Dante's Divine Comedy and may represent the nine circles of
![The Initiation Wells (Inverted tower) in Quinta da Regaleira estate. Sintra. Portugal Stock Photo - Alamy The Initiation Wells (Inverted tower) in Quinta da Regaleira estate. Sintra. Portugal Stock Photo - Alamy](https://c8.alamy.com/comp/WWYE6M/the-initiation-wells-inverted-tower-in-quinta-da-regaleira-estate-sintra-portugal-WWYE6M.jpg)
The Initiation Wells (Inverted tower) in Quinta da Regaleira estate. Sintra. Portugal Stock Photo - Alamy
Culture Critic on X: "10. The Inverted Tower, Quinta da Regaleira, Sintra (1911) 🇵🇹 https://t.co/I7BTMHWw6H" / X
![The Initiation Wells (Inverted tower) in Quinta da Regaleira est Stock Photo by ©zastavkin 177243314 The Initiation Wells (Inverted tower) in Quinta da Regaleira est Stock Photo by ©zastavkin 177243314](https://st3.depositphotos.com/1000929/17724/i/1600/depositphotos_177243314-stock-photo-the-initiation-wells-inverted-tower.jpg)
The Initiation Wells (Inverted tower) in Quinta da Regaleira est Stock Photo by ©zastavkin 177243314
![The Initiation Wells (Inverted tower) in Quinta da Regaleira est – Stock Editorial Photo © zastavkin #177243328 The Initiation Wells (Inverted tower) in Quinta da Regaleira est – Stock Editorial Photo © zastavkin #177243328](https://st3.depositphotos.com/1000929/17724/i/1600/depositphotos_177243328-stock-photo-the-initiation-wells-inverted-tower.jpg)
The Initiation Wells (Inverted tower) in Quinta da Regaleira est – Stock Editorial Photo © zastavkin #177243328
![Unusual view of Initiation well in Quinta da Regaleira. Unfinished Well. Inverted tower. Stock Photo | Adobe Stock Unusual view of Initiation well in Quinta da Regaleira. Unfinished Well. Inverted tower. Stock Photo | Adobe Stock](https://as1.ftcdn.net/v2/jpg/01/39/25/10/1000_F_139251044_x7Wsy0UyZlVb3JihbxcClizMgOXNV21I.jpg)
Unusual view of Initiation well in Quinta da Regaleira. Unfinished Well. Inverted tower. Stock Photo | Adobe Stock
![The Initiation Well (Inverted tower) in Quinta da Regaleira estate. Sintra. Portugal Stock Photo | Adobe Stock The Initiation Well (Inverted tower) in Quinta da Regaleira estate. Sintra. Portugal Stock Photo | Adobe Stock](https://as2.ftcdn.net/v2/jpg/02/05/20/25/1000_F_205202532_wO71dKUI2hznhqEBCyxSgXS2digywFzi.jpg)
The Initiation Well (Inverted tower) in Quinta da Regaleira estate. Sintra. Portugal Stock Photo | Adobe Stock
![View from below of the spiral stairs inside the inverted tower called also initiation well at Quinta da Regaleira Palace Sintra Portugal Europe View from below of the spiral stairs inside the inverted tower called also initiation well at Quinta da Regaleira Palace Sintra Portugal Europe](http://www.clickalps.com/photo/600/158/MC-122851.jpg)