Norwich Castle is a medieval royal fortification in the city of Norwich, in the English county of Norfolk. It was founded in the aftermath of the Norman conquest of England when William the Conqueror (1066–1087) ordered its construction because he wished to have a fortified place in the town of Norwich. It proved to be his only castle in East Anglia. In 1894 the Norwich Museum moved to Norwich Castle and it has been a museum ever since. The museum & art gallery holds significant objects from the region, especially works of art, archaeological finds and natural history specimens.