Throughout the school holidays, a pair of William the Conqueror’s knights will be in residence in the prison exercise yard.
Visitors will be able to watch as they take part in duels, show off their knightly arms and armour, and discover just how heavy chain mail really is.
There will also be a chance for aspiring young heroes to take part in a special Knight School at various times throughout the day.
The fighting knights will be at Lincoln Castle every day until Sunday, September 3 (except for August 5, 6, 19 and 20).
They will be appearing between 11am and 4.30pm each day, while the main castle attractions are open from 10am to 5pm.
Jon Hogan, public engagement manager, said: “A trip to Lincoln Castle is the ideal way to keep the kids entertained this summer, bringing 1,000 years of history to life – right where it happened.
“There’s already so much for families to enjoy together, and our fighting heroes and their knight school are the icing on the cake.
“So whether you’re wanting to learn more about our pivotal role in the story of our nation or are just looking for a fun day out, Lincoln Castle’s the place to be.”
For more information and to book a visit to the castle, visit the website.