Dramatically overseeing the Welsh coast from a rocky outcrop, Harlech Castle was built in 1285 as part of Edward I’s magnificent ring of Welsh fortresses. A must for fascinating history and unbeatable views. Find out more
One of the world’s most famous fortresses, the Tower of London has seen service as a royal palace, prison, armoury and even a zoo. Today, it’s a World Heritage Site, where you’ll be dazzled by the Crown Jewels and hear tales from the Tower on tours given by the Yeoman Warders. Find out more
Even from the outside, the looming fortress known as Rocchetta Mattei looks like a cobbled together hodge podge of architectural influences, and the interior is even crazier thanks to the castle’s more-than-a-little eccentric creator Cesare Mattei who is best known as the father of “electrohomeopathy,” a medical practice said to cure cancer.