Penrhyn Castle is a country house in North Wales, in the form of a Norman castle. It was originally a medieval fortified manor house, founded by Ednyfed Fychan. In 1438, Ioan ap Gruffudd was granted a licence to crenellate and he founded the stone castle and added a tower house. Samuel Wyatt reconstructed the property in the 1780s.
Dover Castle, Kent - one of the best castles I have visited and so much history.....used through WWII for many different purposes......there are 4 miles of underground tunnels that were used as a hospital during WWII.....built on the White Cliffs of Dover