Magna Carta Island, where King John signed the famous document on June 15, 1215, is available to buy at Sotheby's real estate department with a guide price of ?�3.9m ($6.5m).

The agreement was drawn up by the feudal barons and limited the powers of the king - leading to the development of constitutional law.

Magna Carta Island is the site of the signing of the hugely important document

The 3.7-acre island stands in the river Thames, around 20 miles outside central London. It includes a seven bed property built in the 19th century that houses a memorial to the event.

The site was used throughout history as a meeting place for the council of Anglo-Saxon kings known as the Witenagemot and its selection was likely symbolic.

We have this fascinating signed document from King Henry VII, which dates to 1499.

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