Walmart began building Supercenters in 1988 and are around 182,000 square feet employing about 300 associates. Walmart Supercenters offer a one-stop shopping experience by combining a grocery store with fresh produce, bakery, deli and dairy products, electronics, apparel, toys and home furnishings. Most Supercenters are open 24 hours, and may also include specialty shops such as banks, hair and nail salons, restaurants, or vision centers.