The museum is free entry, and at the moment also has an adventure type story that you can do. Museum is fairly large, and really well presented. The content might not be to everyone's taste - and I guess there were some areas that the kids found far more interesting / fun than others. The adventure trail thing was a nice change, the museum had gathered various objects and gave them a category of attack / defence or wisdom. We had great fun trying to decide which of each we were going to take (we chose the guardian as defence, the tiger and wolf as attack and a hat as wisdom!) When you get started you have the choice of three trails - forest, sea or mountains. You follow the map to find elements of the story around the museum. We was going to do another one, but we just didn't get a chance (time) in the end! We also used the cafe, which was reasonable (and the wife said it was one of the best hot chocolates she had had for a while!) We also visited the planetarium (which costs a little extra) which was good fun to do, although probably our youngest didn't get much out of it. We had a fab day out and was probably there for about 3.5 hrs in total.