Svartsjö Castle

Svartsjö Palace (Swedish: Svartsjö slott, "Black Lake Castle") is a Rococo palace situated in Svartsjö on the island of Färingsö in lake Mälaren. It is a 30-minute car ride from , the capital of Sweden.

The location of this palace has housed several royal buildings. During medieval times there was a stone house where prominent Swedish royalty lived. Gustav Vasa and his sons Erik and Johan erected a lavish renaissance palace with a round inner courtyard. It was at least partly designed by Willem Boy and completed in 1580 but burnt down in 1687. The remaining building material was shipped to Stockholm to be used in the build of the castle Tre kronor. The stone foundation was left and is visible today.

The current buildings middle section was started in 1734 and finished in 1739 on the order of Fredrik I. It was built as a hunting palace for then current queen Ulrika Eleonora using drawings by Carl Hårleman. The now Rococo palace, raised by inspiration of French palaces, became a model for Swedish country mansion architecture during the later part of the 18th century.

The palace was extended on both short ends by drawings of Carl Fredrik Adelcrantz, together with a bell tower. It was given to the Queen dowager Louisa Ulrika of Prussia as a residence for her widowhood in 1771. The palace was abandoned for over a hundred years after the death of Lovisa Ulrika in 1782.

Due to the large areas of minable granite in the area the palace was transformed in 1891 into a prison. Prisoners mined the granite until 1910, when a successful trial with farming and logging proved to work better for the prison. As more violent criminals were admitted to Svartsjö Palace, a special closed section was created with 337 cells built with steel walls.

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