This leafy square is home to the State Hospital of Cardiology , which put Balatonfüred on the map. In the centre you’ll encounter the Kossuth Pump House (1853), a natural spring that dispenses slightly sulphuric, but drinkable, thermal water. If you can ignore the water’s pale-yellow hue, join the locals lining up to fill their water bottles. On the northern side of the square Balaton Pantheon , with memorial plaques from those who took the cure here.