The strip mall is only about twenty-five years old. What they mean is that you can buy antiques in the former Kroger. Strip malls do not adapt well to other uses; not only do they have to spend a lot of money maintaining that now-too-large parking lot, but the merchants there don't benefit from casual traffic. Without people coming there on a regular basis to shop at the grocery store, nothing else is really useful: which is why the space to the left of the Antique Mall is some kind of telemarketing boiler room.