Ale's Stones Astronomical Observatories Arkaim - Russia's Stonehenge Avebury - UK Azraq Oasis Wheels Gobekli Tepe - Turkey Henges Karahunj Lake Michigan Megalithic Sites Index Mystery Hill - America's Stonehenge - New England Nabta Playa Stone Circle Oshoro Stone Circle - Japan Rujm el-Hiri - Ancient Stone Circle - Wheel of Ghosts Saudi Arabia's Ancient Stone Structures Seahenge - UK South Africa - Adam's Calendar Stone Faces Index Stonehenge Thornborough