Map of Caves of the Buda Thermal Karst System
The coordinates shown for all tentative sites were produced as a community effort. They are not official and may change on inscription.
Two of them are opened to public now, 15 min walking to each other. It's not worth to come to Budapest just for them. But it's not a bad site to visit if you have half a day in your schedule not stuff in yet.
The site has 6 locations