Plazas can be great places to socialize and explore. Large shopping centers or stripmalls can be destination attractions and cultural hubs. They may contain outdoor social space, shops, and businesses which on their own are not eligible, but together can become an interesting place to visit. The supporting text should demonstrate why these are great places to be social and not just to conduct business.
A named sign for the location could be acceptable providing it is in a location that is safe to access and stand.