This museum is free and a bit tricky to find as you need to enter a building on The Terrace, walk through then follow the sign. It’s self-guided, there are headphones near the entrance. You can see an old cell, weapons made by prisoners, old and current uniforms, but also learn about the reinsertion programme which is quite impressive. There is a short movie explaining what happens once someone is arrested by the police. Interesting museum to visit if you have some time.