bologna, italy - 17 nov, 2022: inside the wooden staircase of the asinelli tower

ancient dizzy step garisenda stair structure stairs timber bologna up gardisenda stack delgi spiral architecture italian handrail two towers climb traditional wood leaning torre garidenda degli asinelli falling medieval wooden old landmark staircase italy steep le due torri viewpoint interior spiralling ticket steps travel tower torres famous brick beams rail tourism oak ascending