Opening date revealed for Norwich Castle redevelopment

A date has been set for the reopening of Norwich Castle Museum & Art Gallery’s medieval keep after a complex five-year redevelopment.

The 900-year-old keep, one of the most important Norman castles in Europe, will welcome visitors back with a soft launch on 7 August.

The stone keep was built as a royal palace over 900 years ago and once host played host to King Henry I. It served as Norwich’s county prison for at least 500 years.

The castle site – which sits atop the largest man-made motte in England and Scheduled Ancient Monument – incorporates the Grade I-listed medieval keep alongside an adjacent museum and art gallery housed in the converted buildings of a Georgian-era prison.

The redevelopment was funded with a grant of over £13m from The National Lottery Heritage Fund and is one of the largest heritage projects opening in the UK in 2025.

The project has seen the interior floorplan of the keep fully reconstructed and furnished as it would have been in medieval times. It has also created upgraded visitor facilities including a new glass welcome atrium, shop, café and learning space, all of which opened in 2024.

The keep will be one of the most accessible medieval buildings in the UK when it reopens, with full lift access to the rooftop battlements.

The development was affected by building issues and rising inflation, pushing total costs from a projected £20m to £27.5m. Complications included the discovery of hidden Norman and Victorian features and a leaking roof that had to be replaced. Norfolk County Council provided an extra £4.7m to see the project through to completion.

The transformation of the keep has been recorded for a fly-on-the-wall documentary narrated by Norwich local Stephen Fry, which will be broadcast on Channel 4 over the summer.

The museum is also home to outstanding collections of fine and decorative arts, archaeology and natural history.

It is part of Norfolk Museums Service (NMS), which comprises ten museums and a study centre. NMS is a partnership between Norfolk County Council and Norfolk's district councils, funded through council tax, earned income and grants. The service has been a National Portfolio Organisation for Arts Council England since 2018. 

Correction
07.07.2025

The article originally reported that Norwich City Council had provided an extra £4.7m. This has been corrected to Norfolk County Council.