UNESCO World Heritage Sites in Hungary, Budapest, Necropolis of Pécs, Fertö, Hortobágy National Park, Millenary Benedictine Abbey of Pannonhalma, Old Village of Hollókő, Tokaj Wine Region, Caves of Aggtelek Karst, Slovak Karst
From a natural ice rink in Slovakia to formations with stunning natural ice sculptures in Austria, here are four ice caves to visit before they melt away.