* Avebury - Wiltshire, England. Avebury is one of the largest stone circles in the world, with a diameter of 1,350 feet. It consists of 27 stones, each weighing up to 100 tons.
* Stonehenge - Wiltshire, England. Stonehenge is one of the most famous landmarks in the world. It consists of a circular arrangement of large stones, which are known as megaliths. The purpose of Stonehenge is still unknown, but it is thought to have been used as a burial ground or a religious site.
* Castlerigg - Cumbria, England. Castlerigg is a circle of 38 stones, which are arranged in a roughly oval shape. The stones are thought to have been erected around 3,000 BC, and the site is believed to have been used as a ceremonial or ritual site.
* Rollright Stones - Oxfordshire, England. The Rollright Stones are a group of three stone circles, which are located near the village of Rollright. The largest circle is known as the King's Men, and it consists of 77 stones. The other two circles are known as the Whispering Knights and the Nine Ladies.
* Ring of Brodgar - Orkney, Scotland. The Ring of Brodgar is a circle of 60 stones, which are located on the Orkney Islands. The stones are thought to have been erected around 2,500 BC, and the site is believed to have been used as a ceremonial or ritual site.