8. Tintagel Castle, England

Perched dramatically on Cornwall’s rugged coastline, Tintagel Castle is more than just a hauntingly beautiful ruin; it’s the mythical birthplace of King Arthur himself.
Thanks to Geoffrey of Monmouth’s 12th-century tales, this wind-swept headland became forever tied to Arthurian legend, complete with sorcery, romance, and royal fascination.
But Tintagel’s real history is just as fascinating: a royal stronghold in the Dark Ages, a medieval castle in the 13th century, and now a site where archaeologists uncover ancient trade secrets linking it to the Mediterranean.