King Sverre's castle (Sverresborg) are the remains of the oldest stone castle in Norway. It was built in 1182–83. Sverresborg is today the name of this city area in Trondheim. The castle is a part of Trøndelag Folk Museum.
Sverresborg is an open air museum with more than 80 historical buildings, several indoor exhibitions, and two restaurants. The museum’s old town is comprised of buildings that were originally located in downtown Trondheim, and offers a charming representation of the wooden houses that have dominated the cityscape from the 18th century up until today. 
The museum’s rural department is located around the ruins of the castle, and consists of farmsteads and houses surrounded by picturesque nature. The houses are all originally from the Trøndelag region. In the rural department you will also find the Sami collection, the Haltdalen stave church, the Lo church and the old school.