You've probably already seen Arundel Castle without knowing it—the striking resemblence to Windsor means that it's frequently used as a stand-in for its more famous cousin in movies and television. Begun in the 11th century, this vast castle remains rich with the history of the Fitzalan and Howard families and with paintings by Van Dyck, Gainsborough, and Reynolds. During the 18th century and in the Victorian era it was reconstructed in the fashionable Gothic style—although the keep, rising from its conical mound, is as old as the original castle (climb its 130 steps for great views of the River Arun), and the barbican and the Barons' Hall date from the 13th century. Among the treasures are the rosary beads and prayer book used by Mary, Queen of Scots, in preparing for her execution. The newly redesigned formal garden is a triumph of order and beauty. Although the castle's ceremonial entrance is at the top of High Street, you enter at the bottom, close to the parking lot.