We were talking about a restaurant that was recently gutted, like either they went out of business or are remodeling, or they've given up their lease and the owner of the building is making it fresh for a new tenant.
One solution would be just to make a museum out of it. Like if it's a sandwich and chips kind of place, just leave all the furniture and food and packages and menus. Put up some velvet ropes and charge people to come in and look at it.
At first no one much would want to see it, but as times changed, and as restaurants evolved, they'd get that nostalgic feeling and want to see what it was like in the old days. If you have patience you can just wait it out ... and eventually make money.