Britain's most famous prehistoric monument, on Salisbury Plain in southern England. It consists of two circles of large standing stones, one inside the other. The inner circle consisted of arches made by laying one stone across the tops of two others. Some of these have fallen, but some are still in position. Stonehenge was built between 3000 and 1500 BC. Nobody knows why it was built, but many people think it was to study the stars and planets or to worship the sun, because a line through its centre would point directly to the position of the rising sun at the summer solstice or of the setting sun at the winter solstice. Many people go to Stonehenge for midsummer celebrations, and it is now one of the only times of year when the public are allowed near the stones. Stonehenge was made a World Heritage Site in 1986. 巨石阵:英国最著名的史前纪念碑,在英格兰南部的索尔兹伯里平原上。它由两个大的站立的石头圈组成,一个圈在另一个圈内。内圈由拱形组成,拱形是将一块石头铺在另外两个上面。其中有些下降了,但有些仍然存在。巨石阵建于公元前3000至1500年。没有人知道为什么要建造它,但是许多人认为这是研究恒星和行星或崇拜太阳的原因,因为穿过它中心的线会直接指向夏至或落日的位置在冬至。许多人去巨石阵举行盛夏的庆祝活动,现在这是一年中仅有的一次允许公众靠近石头的日子之一。巨石阵于1986年被列为世界遗产。