Answer: 83

The stones of the central cluster are made up of larger sarsens and smaller bluestones. The sarsens were erected in two concentric arrangements. The inner one is a horseshoe of five trilithons (the name for two upright stones topped with a horizontal lintel), of which three complete trilithons still stand. Around this are the remains of the outer sarsen circle, which was probably once made up of 30 stones.

Answer: 4,500 years

The first monument at Stonehenge was a circular earthwork enclosure. In about 2500 BC the site was transformed by the construction of the central stone settings.

Answer: The Marlborough Downs

The Downs are 20 miles from Stonehenge. The sarsen stones each weigh around 25 tons.

Answer: The Preseli Hills in south-west Wales

It's thought that a combination of water and overland travel was used to bring the bluestones to Stonehenge. The stones travelled a distance of at least 156 miles. 

Answer: The Heel stone

The Heel stone is the large stone (it weighs about 30 tons) that stands where the avenue leading to the circle meets the earthwork enclosure around it. During the winter solstice, the sun sets between the stones of the tallest trilithon.

Answer: Sir Christopher Wren

Sir Christopher Wren lived from 1632 to 1723. He was the greatest English architect of his time, and designed 53 London churches, including St Paul’s Cathedral.

Answer: Cecil Chubb

Stonehenge was purchased at auction for £6,600 by local businessman Cecil Chubb, who reportedly came to the auction to buy some dining chairs.

Answer: 100 metres

The banks of the ditch enclosed an area about 100 metres in diameter, and had two entrances. It was an early form of henge monument.

Answer: Ceremonial battle axe

This ceremonial battle axe, beautifully shaped and finished, has no signs of use. It is one of the earliest of its kind to be found in Britain. It is made of the same material as the bluestones at Stonehenge and may well have been fashioned from a piece of one of these stones.

Answer: The River Avon

The Avenue extends from the entrance of the earthwork enclosure and was built to connect Stonehenge with the River Avon and the small henge on its bank. Today it can be seen in part as low parallel banks enclosing a corridor about 12 metres wide.

Answer: The third image along

The third image is in fact of Stanton Drew Circles and Cove in Somerset.

Answer: To cover graves or burials

Round barrows are earth mounds, usually covering one or more graves or burials and surrounded by a circular ditch. Built mostly between 2200 and 1500BC, round barrows also cover other features such as timber burial structures, rings of timber posts or pits.

Answer: 8.71 metres (28ft 7in)

The stone measures a total of 8.71 metres from base to tip, although 2.13 metres of the stone is buried underground.

Answer: Noah's Flood

The guidebook was written by Henry Browne and was based on a biblical view of history.

The book regarded Stonehenge as one of the few ancient structures to have survived the Old Testament flood. You can see a copy of the guidebook in the exhibition at the visitor centre.

Answer: Around 1.3 million

As part of this, 50,000 school children visit Stonehenge for free each year. Over 150 people volunteer at the site.

Answer: Flinders Petrie

In 1874 and 1877 Flinders Petrie surveyed Stonehenge in detail, and devised the numbering system for the stones that is still in use today.

Answer: King James I

The king subsequently commissioned the architect Inigo Jones to conduct a survey and study of the monument. Jones argued that Stonehenge was built by the Romans.

Answer: 1986

In 1986 Stonehenge and Avebury were among the first seven sites in the UK to be inscribed on the UNESCO World Heritage List, recognising them as places of exceptional importance to all humanity.

Answer: 6,500 acres

The Stonehenge part of the World Heritage Site covers 6,500 acres (2,600 hectares) of chalk downland and arable fields. It's an area seven-and-a-half times as big as Central Park in New York City.

Answer: JWM Turner

The painting is considered a milestone in Turner's career and was the basis for what is surely the most striking print in his series Picturesque Views in England and Wales.