External staircase of Palazzo Contarini del Bovolo Venice

Adorned with a plethora of arches and resembling the Leaning Tower of Pisa, the external spiral staircase of the small Palazzo Contarini del Bovolo in Venice is the buildings best known feature. Known as the Scala Contarini del Bovolo (of the snail), the staircase leads to an arcade, offering a charming panoramic view over the rooftops of Venice.