As part of events to mark the 800th anniversary of the Magna Carta, the four original manuscripts have been moved to the House of Lords.
Two were previously held by the British Library, while one each could be found in Lincoln and Salisbury cathedrals.
The Magna Carta is the charter which first established the foundations of the rule of law and is widely considered to be the notable first step toward parliamentary democracy.
It is written entirely in Latin.
The priceless artefact was first authorised in June 1215 at Runnymede on the River Thames.
It is thought the Great Seal would have been used rather than a signature.