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Inside the Sagrada Familia, Gaudi’s monumental church in Barcelona, Spain.

The Most Terrifying Spiral Staircases on Earth

environmentalgraffiti.com

Casa Cubo in Sao Paulo Brazil

wmagazine.com

Chiave di sol ( treble clef ) Massimo Della Latta. . Most people don't know, but the towers in the old Captains homes were designed exclusively for open spiral stairways

Robot Check

amazon.com