The very nature of the best preserved medieval castle in Britain makes it tricky to improve accessibility but now the ground floor is accessible to wheelchairs. Manx National Heritage have put wireless buttons in to open glass doors. These keep in the new heating so you are warm in the shop and the ground floor rooms. There is a new and less steep ramp with good handrails through the portcullis to the inner castle. From there you will find another wheelchair ramp and handrail into the ground floor rooms. The interpretation exhibition has been refreshed and the lighting is excellent in here. There are interactive displays so that those who cannot access the remainder of the castle can explore the castle virtually, using the 3D photography utilised. This has proved very popular with youngsters. Not refreshed but available is an accessible toilet in the grounds. Costa Cafe is near to the entrance, by the harbour, and has level access and an accessible toilet. Well done Manx National Heritage.