Zvíkov is a castle above the Orlík reservoir at the confluence of the Vltava and Otava rivers in the Písek district.
It stands on a rocky promontory about one kilometer north of the village of Zvíkovské Podhradí at an altitude of 370 m.
The castle is managed by the National Monuments Institute and is open to the public during visiting hours.
It has been protected as a cultural monument since 1963, and in 1978 it was entered on the list of national cultural monuments.