Starting in Budapest, the capitol of Hungary, the Trio travels by train to Lake Balaton, the largest freshwater lake in Central Europe. With bustling resort towns and historic thatch-roofed villages, Lake Balaton is an amazing place to explore. Join the Trio to climb through the ruins of a medieval castle, swim in the cool waters of Lake Balaton, and head deep into the Earth for a boat ride through the watery caves of an underground lake. Let's go!