To find the closest grocery store, it typically depends on the current location of the person asking. There are many grocery store chains, and if in Austria, common ones include Spar, Billa, Hofer (Aldi equivalent), and others. If in the U.S., chains like Wegmans, Giant Eagle, Kroger, and Hen House are common. For an exact closest grocery store, online map services or store locators are best, where one inputs their current address or zip code for pinpoint results. Without specific location details, providing the nearest store is not feasible. If the current city or address is known, I can help find the closest grocery store specifically. Please provide the current location or allow me to use location detection tools.