7. The Castle of St. Hilarion, Northern Cyprus
Perched atop a mountain in the Kyrenia range, the Castle of St. Hilarion is one of the most dramatic ancient ruins of Europe. The castle isn’t named after the Palestinian monk St. Hilarion the Great, but after another saint of the same name. The castle dates to the 11th century. The interiors of the castle are fascinating to walk through, and the view of the Mediterranean outside, unbelievable.