One of the most beautiful and best preserved secular buildings from the Late Gothic period in Lower Bavaria, this former administration and residential building of the Bavarian dukes was built in 1410. The Herzogsburg is part of Dingolfing Museum and on the ground floor it houses the municipal history section and the wedding room of the town of Dingolfing. Renovated in 1999, the building has a presentation space of over 1,000 m² with more than 1,500 exhibits. There is a function room upstairs.