Three rings, two avenues of standing stones, and a burial chamber make up the Stanton Drew Circles, one of the largest and most mysterious monuments in Britain, dating from 3000 to 2000 BC. It's far less well known than Stonehenge and other circles, however. The size of the circles suggests that the site was once as important as Stonehenge for its ceremonial functions, although little of great visual impact remains. English Heritage supervises the stones, which stand on private land. Access is given at any reasonable time, and a small admission fee or donation may be requested. You have to walk through a farmyard to reach the field where the site lies, so wear sturdy shoes. To get here from Bristol, head south on the A37 and turn right after about 5 miles onto the B3130, marked Stanton Drew. The circles are just east of the village, where more of the stones may be seen in the garden of the Druid's Arms pub.