As they were already there, Harry and Hermione decided to take a complete tour of the castle while they had time. They moved through all parts of the place, from the buried Roman walls to the opulent Victorian Gothic apartments. It was rather breathtaking, but Hermione ruled it out as a possible venue for their new school, which Harry was secretly pleased with. Converting a derelict old castle somewhere remote was one thing ... denying Cardiff one of its most iconic visitor attractions would be a completely different kind of nightmare altogether.