It attracts thousands of visitors a year, it's a World Heritage Site, but it's at risk.
Hadrian's Wall was built by the Romans 1,900 years ago.
Over the years, though, wind, weather and farm animals have taken their toll on the stones, and parts of the wall are badly in need of repair.
Now, the Trust which runs it has come up with a novel way of paying for the work.
Hannah McNulty reports.
Members of the public are being encourage to 'adopt a stone' as part of a new Hadrian's Wall fundraising campaign.
As a result of funding cuts the Hadrian's Wall Trust are calling on anyone who visits the wall to get behind the scheme to help fund essential restoration work.
Anyone who takes part in the scheme will be able to adopt a stone in an online, virtual Hadrian's Wall, getting their name, picture and a message inscribed on it.
There is also the opportunity for people to adopt their very own Roman soldier to help protect their stone.
For more information visit the Adopt a Stone website.
The Hadrian's Wall Trust have launched a new fundraising appeal to try and raise money for the upkeep of the historic site.
The wall, which spans 73 miles across northern England, has been slowly deteriorating over a number of years.
Budget cuts now mean the charity needs to call on members of the public to help fund vital restoration work across the site.