You will be able to view what once was 'The Gatehouse' here, which was the entryway into Blundeston Prison, before it was knocked down in 2014.
In the context of prisons, a gatehouse is a building located at the entrance, acting as a gateway and control point. It often houses security personnel and administrative functions, serving as the primary point of entry and exit for staff, visitors, and inmates. Historically, gatehouses in prisons, like the one at Westminster Gatehouse, have also served as holding areas for prisoners awaiting trial or transfer.