Stonehenge, which lies 13km north of Salisbury, England, is believed to have been an ancient form of calendar designed to capture the light from the summer solstice in a specific fashion.

• 圆形石林--将巨大石块竖立按圆形排列的纪念物，周围环以土堤。建于史前时代，约从西元前3100年开始。坐落在英格兰伦敦西南约80英里处。