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Stonehenge， a rock circle， is not only one of Britain's most famous historical places but also one of its greatest mysteries． Every year it（1）　　more than 750，000 visitors． People like to go to this place especially in June as they want to see the sun rising on the（2）　　day of the year．

For many years， historians believed Stonehenge was a temple where ancient leaders（3）　　to

communicate with the gods． However， historian Paul Stoker thinks this can't be true because Stonehenge was built so many（4）　　ago． "The leaders arrived in England much later，" he points Out．

Another popular idea is that Stonehenge might be a kind of calendar． The largest stone were（5）　　together in a certain way． On midsummer's morning， the sun shines（6）　　into the center of the stones． Other people believe the stones have a medical purpose． They think the stones can（7）　　 illness and keep people healthy． "As you walk there， you can feel the energy（8）　　your feet move up your body，" said one visitor． No one is sure（9）　　Stonehenge was used for， but most agree that the position of the stones must be for a special purpose． Some think it might be a burial Place（10）　　a place to honor ancestors． Others think it was built to celebrate a victory over an enemy．