Stonehenge

Stonehenge was an assemblage of giant stones erected in Wiltshire during the 2nd Millennium BC. John Brent had a theory that Stonehenge was in reality an ancient spaceport. (PROSE: Time and Relative) In fact, he wasn't too far off from the truth — Stonehenge served as the burial site and hiding place of the Pandorica, an ancient box used by the Alliance to trap the Eleventh Doctor. They used the shape itself of the rocks as a huge transmitter to send over the members of the Alliance should the Doctor come to call. (TV: The Pandorica Opens)

Creation
The Eighth Doctor and Samantha Jones visited Stonehenge while it was being constructed. (PROSE: The People's Temple) The Monk claimed to have used anti-gravity lifts to assist in the completion of Stonehenge. (TV: The Time Meddler)

At some point in its history, the Alliance placed the Pandorica beneath Stonehenge for the Eleventh Doctor to find. The pillars beneath Stonehenge began to act as a transmitter for the members of the Alliance to converge on it in 102. The transmission was sent to everyone and to all time zones, resulting in Vincent van Gogh (presumably amongst others) having visions of the opening of the Pandorica. When the Doctor arrived at Stonehenge and found the Pandorica, the Alliance imprisoned him within it. (TV: The Pandorica Opens) Since the Doctor later re-wrote history and the Alliance was never formed, it is probable that the "Under-Henge" and its contents no longer exist. (TV: The Big Bang)

The Druids
During the times of the druids, Cybermen were believed to have been guarding the Pandorica underneath Stonehenge. Parts of Cybermen such as arms and heads lay on the ground around the henge. The Doctor believed they had been 'dusted up by the locals'. (TV: The Pandorica Opens) Since the Doctor altered the timeline, the presence of the Pandorica and, subsequently, the Cybermen had never occured. (TV: The Big Bang)

20th century
In either November or December 1967, one of the stones of the monument had "a circular symbol with an 'R' in it" — the symbol of the Revolution Man — carved into it over night. (PROSE: Revolution Man)

During the 1970s, the Ragman was defeated at Stonehenge. (PROSE: Rags)

In 1976, UNIT fought Vardans at Stonehenge, where the Seventh Doctor was captured by the Monk. (PROSE: No Future)

21st century
During the first seconds of 1 January 2000, Stonehenge, along with the rest of the world, was nearly destroyed by the Eye of Harmony. (TV: Doctor Who)

Stonehenge was among the Earth cultural items the Threshold had stolen and taken to the town of Wormwood on the Moon. (COMIC: Wormwood)

Other information

 * Stonehenge was near the location of an opening to the Yssgaroth's Universe. (PROSE: The Pit)

Behind the scenes

 * For The Pandorica Opens, the Doctor Who team went to Stonehenge to get the scenes in and around the landmark. (CON: Alien Abduction)