Cardiff Castle (Welsh: Castell Caerdydd) is a medieval castle and Victorian Gothic revival mansion located in the city centre of Cardiff, Wales. The original motte and bailey castle was built in the late 11th century by Norman invaders on top of a 3rd-century Roman fort. 

The castle has had many incarnations and owners over the 1,000+ years of its existence until it was given to the City of Cardiff in 1947.