Near the manicured gardens and hilltop villas of Sintra, Portugal, lies the fairytale ... spiral down deep within the earth, like inverted towers. The wells were never used to collect water.

Near the manicured gardens and hilltop villas of Sintra, Portugal, lies the fairytale ... spiral down deep within the earth, like inverted towers. The wells were never used to collect water.

BEST OF 2019: Steeped in strange symbology, the breath-taking 'inverted tower', or initiation well, found at the heart of Sintra's Quinta da Regaleira celebrates Portugal's unique historical ...