Lincoln Castle reopens today following a £22 million refurbishment.
It was closed in December last year to allow for the work to take place. A new specially built vault has been created to display the city's copy of the Magna Carta, while a new Medieval Wall Walk will give visitors the chance to explore the towers and dungeons.
In addition to the Castle reopening, a new shuttle bus launches which will make it easier for tourists to get around the city and see attractions like the castle and cathedral.
An investigation has revealed that skeletons discovered last year in the grounds of Lincoln Castle were those of seven adults and three children.
The oldest child had evidence of a stab wound.
DNA tests will now be carried out to build up a profile of their life in Saxon England.
The new home for the Magna Carta can be seen by visitors to Lincoln Castle from today.
But how much do you know about the famous document?
It was sealed under oath by King John at Runnymede on the bank of the River Thames, on 15 June 1215
It was the first document imposed on a king of England by a group of his subjects - the feudal barons - in an attempt to limit his powers
It specified that the upper classes could not be arbitrarily punished by the King - only under the law of the land
Lincoln's copy of the Magna Carta is one of only four surviving originals of the 1215 document
Workmen have been on site at Lincoln Castle for around 60 weeks to work on a major restoration project.
Now in its fourth and final year, the project is seeing the finishing touches made to the new home of the Magna Carta.
The vault has been designed by architects who have had to maintain environmentally-controlled conditions, keeping the documents preserved.
The project also includes the construction of a cinema to screen films about Magna Carta and a new shop and cafe for visitors.
The work is funded by the Heritage Lottery Fund (HLF), the European Regional Development Fund (EDRF) and Lincolnshire County Council.
Mary Powell, from Lincolnshire County Council, says the work involved in the project is as interesting as the end result.
The final phase of a huge restoration project can be seen today.
The restoration of Lincoln Castle Prison - the fourth phase of Lincoln Castle Revealed - has now begun, and visitors can have behind-the-scenes tours of the work from today.
A cinema and new visitor centre will also be opened as part of the £22m scheme.
It may just look like an empty box - but this glass case is the new home of one of the most important books in history.
Lincoln Castle Revealed is an ambitious restoration of the city's castle - and the centrepiece will be a new cabinet displaying the Magna Carta.
It can be seen from today, as part of behind-the-scenes tours of the conservation work.
Some £22m has been spent on the castle - which dates back to 1068 - between 2011-14. It's hoped the project will be finished in time to celebrate Magna Carta’s 800th anniversary in 2015.
A lot of delicate work has been taking place to redevelop Lincoln Castle so that it can display one of the world's most significant artefacts.
Today developers working on the project have held a "topping out" ceremony - as they complete the next phase of work to house the crucial document.
Walkways - and even an underground cinema are being installed - to tell the story of the Magna Carta - which is close soon to a milestone anniversary.
Michael Billington reports:
A milestone in the restoration of Lincoln Castle is being marked by the County Council.
They're holding a 'topping out' ceremony as work begins on the vault for the famous Magna Carta.
It is part of Lincoln Castle Revealed - an ambitious restoration of the building, which dates from 1068.
Around £22m is to be spent on the castle between 2011-14, with the aim to reveal the restored building in time to celebrate the Magna Carta’s 800th anniversary in 2015.
Lincoln Castle may be undergoing restoration work but it's still looking good, thanks to three of the city's schools. Children have made artwork, mounted on hoardings that cover up the ongoing work.