Pevensey Castle

One of the most militarily significant sites in England, Pevensey was a Roman Saxon Shore fort where William the Conqueror landed in 1066. Its massive 4th-century walls still stand to near their full height, enclosing a medieval Norman castle within. Reactivated in 1940 with cleverly camouflaged WWII machine gun posts, the site now features exhibitions spanning 1,600 years of military history.