​McDonald’s secondary external structures with barred doors seen in cities and more populous areas

I’ve seen these on a few occasions only ever in cities or more populous areas, all nearly identical at the corner of the property across from the main building. Arched entrances with bars over the doors and windows, a big McDonald’s sign on top. This one is in Lancaster city PA, and I can remember having seen another one in Newark NJ near the city center. I’ve nicknamed them “Gate Houses” since that’s the closest thing I could compare one to, but any sort of research hasn’t been able to get beyond that.