I don't know if I am breaking any rules by posting a link, but here is a story in the Daily Mail of an old Pre-Revolutionary War fort turned in a home hundreds of years ago. When the new owner, after much research, took a crow bar to the plaster walls, you won't believe everything he found. Amazing pics and story.
Man finds a 253-year-old fort hidden inside the walls of his home
A West Virginia man has discovered a pre-Revolutionary log fort hidden beneath the plaster walls of his home. He purchased the property in 2019 after the last descendant died.
www.dailymail.co.uk