Nice historical place to visit. Quite a lot of steep stairs up to the actual castle itself, so wouldn't recommend for people with limited mobility, no wheelchair access. Inside they have a small counter to purchase tickets and can also purchase a booklet with information on the place. We have english heritage memberships so didn't have to pay entrance fees. There is no shop there or any sorts of refreshments, nor are there any toilets. The place itself isn't that big to look around, it's a big round open room, there are some stone seats with built in speakers that tell individual stories relating to the building, each seat also has a printed text sheet so you can read it if you can quite hear it properly. There are some information panels to read around the room too. There's more stairs inside, there are some metal see through modern stairs that will take you up to a bridge you can walk across, that take you to openings with spiral stone stairs that lead you to the roof. If you don't like heights you probably wouldn't like them. On the roof itself it is wooden panelled and offers a good view of york, there are some built in seats if you want to sit down and some information panels. It's nice to see but there's not much to it, you can be in, looked around and done in 30 minutes, although we spent a while there as we were sitting for a while. Not sure it's worth the entrance fee if we would of had to pay but it was a nice piece of history to see. I wouldn't recommend coming just to see this as it will not take you very long, so I would try and tie it in with another attraction to make a visit to tork worthwhile if you don't live here.