Known as the “Key to England,” Dover Castle has been defending the coastline since the 12th century. It was used as a secret command centre during World War II, playing a crucial role in the Dunkirk ...

Windsor Castle is typically open from 10 a.m. to 4 p.m. from March through October. From November to February it welcomes guests from 10 a.m. to 3 p.m. Since Windsor Castle is a royal palace ...