Jungle Jim's (Eastgate) Cincinnati
This building was originally built as the first Bigg's Hypermarket and a small adjoining mall / shopping center called Bigg's Place Mall in 1984. The Bigg's Hypermarket closed in 2010 and has since been tranformed into Jungle Jim's second massive grocery store. I am pretty sure this Jungle Jim's is the nation's largest grocery store at a whopping 215,000 square feet (larger than most supercenters or department stores)!
Jungle Jim's International Market (former Bigg's hypermarket) - Eastgate South Drive - Cincinnati, Ohio