Avebury may not be as convenient, famous or spectacular as Stonehenge, and you may never have heard of it. But it also lacks the large crowds, high fences, entrance fees and "don't touch" restrictions of Stonehenge. And it's well worth a visit. It's easy to pass by the quiet village of Avebury -- about 30 miles north of Salisbury. It's small, somewhat plain, located on a rural road, and has a quiet atmosphere.

However, don't let that fool you; Avebury contains the largest stone circle in Europe and the largest manmade prehistoric mound, Silbury Hill.

Avebury's stone circle dates to around 2600 B.C. Experts are still trying to determine its exact age, purpose and builder.