Oslo
Baroque manor house with history back to the 1720s, when it was built over the arched cellar of Bispeborgen (The Bishop's Castle). Oslo ladegård is located in the heart of Oslo's medieval town, with restored rooms featuring antique furniture and paintings. The medieval hall in the cellar is what is left of Bispeborgen from the 13th century. In the cellar you can see a sound and light show presenting burial customs from the Middle Ages to the 17th century. Open guided tours in Norwegian in June through September on Saturdays and Sundays at 3 pm. Guiding in Norwegian. Group tours can be booked all year. Concerts on Wednesdays. Café open all year. Norwegian name: Oslo ladegård
Source: VisitOSLO as