The area was inhabited as early as prehistoric times, when the Celts built a fort here in the 1st century AD. The current castle was built in the first half of the 13th century, most probably on the orders of King Přemysl Otakar I, but the exact date is not known. The first written mention of the castle comes from year 1234 and owned by the Kings of Bohemia.
The seat of the first Czech kings on the strategic trade route at the confluence of Vltava and Otava rivers had reached its greatest fame in the 14th century under the reign of the beloved Czech sovereign Charles IV. He commissioned thorough reconstruction, he loved to stay there and until the construction of Karlštejn the Czech crown jewels were kept there.
After the damaged inflicted by the war, Zvíkov was restored, but its glory was long gone and the castle served only for farming purposes. A fire accelerated the deterioration of its buildings in 1751. Thus a once-important seat of Czech kings it had become an almost ruin by the 1840s, at which time the Schwarzenbergs, owners of the ruin, invested huge sums in a thorough reconstruction, which restored the heart of the castle to its former glory.
The oldest part of Zvíkov is a massive prismatic residential tower named Hlízová with palace buildings built on its sides. During the reign of Ottokar II of Bohemia, a palace named Královský (King's Own) was built and this ground plan has been preserved until today. The new palace was built in lavish style and its parts were connected by monumental arcade.
The Orlík Dam, which was built between 1954 and 1962 and named after Orlík Castle, deluged the castle downtown and made Zvíkov easily accessible.