Lewis and Harris Island, Isle of Lewis HS2 9AZ, UK
Photo by Joe Gough / Shutterstock
Dun CarlowayJust a few miles from the world-famous Callanish Standing Stones on the Isle of Lewis sits Dun Carloway, also known as the Carloway Broch—an ancient, circular stone tower that was once 30 feet tall. Impressively, it remains almost the same height today, despite the fact that it’s crumbling on one side. Built around 200 B.C.E., the hilltop fortress features a fascinating double-layered construction and staircases within the walls. It most likely served as a well-fortified residence for an extended family, complete with space for animals on the ground floor, as well as a symbol of power and status in the area. Though it’s not clear how long the broch remained in use, it seems to have been still largely intact in the 1500s, when some of the Morrison Clan sought refuge there after being discovered stealing local cattle.