Oscarshall Palace is a maison de plaisance located in the small fjord Frognerkilen on Bygdøy in Oslo, Norway.

[1] The palace was built from 1847 to 1852 by the Danish architect Johan Henrik Nebelong on commission from King Oscar I and Queen Joséphine of Norway and Sweden.

The palace was almost given a new role when it was decided in 1929 that Oscarshall would become the new residence of Crown Prince Olav and Princess Märtha.

The situation was later solved when Fritz Wedel Jarlsberg sold his estate Skaugum to the royal couple.

Between 2005 and 2009 Oscarshall underwent a total renovation and restoration, bringing colours and furniture back to its original style from 1859.