Took my Mum here (she is 93 and uses a wheelchair) on a cold March day. Access for wheelchair users is pretty good. Had a lovely lunch. Lots to eat if you are vegetarian. Mum loved the gift shop which is pretty extensive. You have to use 2 different doors to access it all with a wheelchair but it's not difficult and the staff are very helpful. Some things are quite expensive but there is a great range of things to choose from.