After a large-scale restoration worth $37 million that lasted five years, Norwich Castle Keep is once again open to the public, with all five of its floors accessible for the first time, CNN reported.

Built in the 12th century by order of William the Conqueror, the castle now features its first permanent medieval gallery outside London, created thanks to more than 900 Norman artifacts provided by the British Museum.

Norwich Castle Keep is among the first castles erected following the Norman Conquest of England—an historic event also depicted in the famous Bayeux Tapestry, which is currently under restoration as well. The building once served as a symbol of power and prestige for the Normans.

The castle’s sturdy walls, preserved for more than nine centuries, were constructed from Caen limestone imported from Normandy—a lasting testament to the conquerors’ might. According to experts, the site could become an appealing alternative for tourists wishing to explore England beyond the traditional tourist routes. |BGNES