Taihang Mountains in Linzhou, China to take a look at the worlds tallest spiral staircase.
This spiral staircase called "Wendelstein" is made of sandstone and part of Castle Hartenfels in Torgau / Saxony
Beautiful spiral staircase at Melk Abbey, Austria
ohcrumbles: Spiral Staircase (by Bella Luna Creative)
Chateau de la Source, Luxembourg