Join 'party' upcoming events being held in Tapolca. Tapolca is a charming city in western Hungary known for its unique underground lake, the Lake Cave of Tapolca, where visitors can take boat tours through a network of illuminated caves, as well as its historic old town, featuring the 13th-century Esterházy Palace and the Roman Catholic Church of St. Andrew, making it an ideal destination for those seeking a mix of natural and cultural attractions.