I thought hospital in the rock was an excellent and interesting museum. A bit different, too! The tours are on the hour and last 60 minutes. There are plenty of cafés to enjoy a drink if you just miss a tour (like we did) and wait for the next one. You can only visit the labyrinth of rooms as part of a guided tour and our English speaking tour guide made it an enjoyable visit. It can feel quite chilly once you're deeper into the rocks, but there is an opportunity, at the start of the tour, to borrow an overcoat, if you don't have anything suitably warm with you. Wax figures and mock-operation scenes give a real feel for what it must have been like, working and surviving, in very difficult and trying circumstances. Some of the scenes are quite bloody and graphic and may be unsuitable for young children. You are not allowed to take photos in the museum, but a group photo is taken by the tour guide and posted to their website as a reminder of your visit.