Petržilkovský Island

The smallest Prague island on which stands the smallest historic water tower, called the Petržilkovská.

Petržilkovský Island is clearly the smallest island in the Vltava, measuring a mere 60 x 10 metres. It is adjacent to the Children's Island and the Jirásek Bridge. While it is not accessible to the public, you can see it while sailing past on a boat.

During the Hussite wars of the citizens of the Lesser Quarter lost part of Kampa and the shore of the Lesser Quarter, which were occupied by long-time residents. Therefore, they had no other choice than to build a new water tower outside the boundaries of the former city. At that time, a Lesser Quarter burgher named Jan Petržilka built in the place of the charterhouse monastery burnt down by the Hussites a new mill.

In 1502 the citizens of the Lesser Quarter added a water plant and a wooden water tower. In 1547 – 1561 the island was confiscated by King Ferdinand I of Habsburg. In 1859 the municipality of Prague bought the island.

During the construction of the Smíchov locks part of Petržilkovský Island was attached to Children's Island, and the rest was greatly reduced.