Hungary has several World Heritage sites. These are:
Budapest, including the Banks of the Danube, the Buda Castle Quarter and Andrássy Avenue
Old Village of Hollókő and its Surroundings
Caves of Aggtelek Karst and Slovak Karst
Millenary Benedictine Abbey of Pannonhalma and its Natural Environment
Hortobágy National Park - the Puszta
Early Christian Necropolis of Pécs Sopianae
Fertő/Neusiedlersee Cultural Landscape
Tokaj Wine Region Historic Cultural Landscape
Other major tourist destination is Lake Balaton, with winehills, thermal spa in Hévíz around.
There are also some amazing things to see.