Oh my gosh. The very definition of a rip off! They get you for €5 a person as soon as you approach.
Look around as you pay your euros. YOU’VE SEEN IT ALL! There is nothing behind the walls. There’s not even a bathroom.
The history is interesting, but be sure to have your phone and look it up on Wikipedia. There is no exhibit. No nothing. What you see is what you get. Walls.
Hopefully they can add an exhibit or a guided tour or something to justify the cost. Otherwise this is a strong AVOID!