Major long-term stone revamps are set to begin at Lincoln Castle and Lincoln Cathedral this year.
Lincoln Castle will be having its crumbling south wall rebuilt, as well as repairs to Lucy Tower and improvements to the visitor walkway.
Lincoln Cathedral’s main entrance on the west will undergo a turret revamp, taking five years to complete and costing £2.5 million.
The statue of Swineherd of Stow and St Hugh of Avalon will also be repaired, which will take two years to finalise.
Work will begin on the 1220s cathedral on February 28, nine months after it launched the campaign to repair the damage from weathering and age.
Lincoln Castle’s repairs were approved by the Lincolnshire County Council’s Planning Committee on February 14.
The repair work to the wall could mean the “rooftop” walkway, which currently goes around three of castle’s sides, will be completed all the way round.
Executive Member for Cultural Services Eddy Poll said: “This project will open up the final section of the castle walls to the public, helping attract new visitors to the site.
“However, we’ll be doing this in a way that both preserves the historic character of this internationally significant monument and respects the rights of neighbouring residents.”