I'm a sucker for mysterious prehistoric structures, artwork and dwellings in atmospheric and evocative places. I will never forget finding Skara Brae on Orkney in the early, purple dusk of a winter afternoon off the north coast of Scotland. The wind howled and whipped up the sea as we pressed against it to the shelter of the 5,000 year old round houses, imagining the warmth and comfort they must have given the people who lived there on the edge of the known world so many millennia ago. It was magic.
If you like that kind of magic, you'll be spoiled for choice in the United Kingdom where archaeology is a national passion and really interesting prehistoric sites are all over the place. Have a look at my favorite UK Destinations for Stone Circles and Ancient Sites to see what I mean.
Do all those prehistoric terms make your head spin? Can't tell a dolmen from a cromlech from a broch? Not to worry, consult What is a Dolmen? - A Glossary of Prehistoric Monuments in Britain, and you'll be dicing up your megalithic, neolithic, paleolithic terms with the best of them in no time. Well, at least you'll be able to impress your friends when you happen upon a ruin while hill walking in Britain.