"Chill in the Ice Caves at Werfen The largest ice caves in the world lie just 30 miles south of Salzburg in the Eisriesenwelt at Werfen. Only a portion of the more than 20 miles of caves are open to the public on a 75-minute guided tour, but what's available to visit is impressive. Magnificent ice formations, frozen waterfalls, and a smooth, rinklike ice palace can be found in this underground world. Visitors will also see Hymir's Castle , an enormous ice sculpture named for the ice giant of the Edda (the oldest Germanic-mythology saga), and witness layers of time, much like rings on a tree, encased in the glacier (which is actually not a glacier but a massive chunk of accumulated ice)."
Austria's Mind-Blowing Natural Attractions
Photo courtesy of Österreich Werbung / Eisriesenwelt