I don't know if or how this applies to our discussion, but on searching for a description of an "arcade entrance" its features could be:
... a deep entrance to a shop/building, popular in the 1920s/30s featuring a series of arches, columns, or piers to create a covered or recessed entryway. They can be complex in shape and often include elements like a showcase island and decorative detailing. A stylistic feature to create a dramatic, covered, and protected entranceway for pedestrians.
Key features
A series of arches supported by columns or piers.
Deep and recessed. Entrance set back from the main building line, often with a complex, zig-zag, or in-and-out shape.
Entrances often with elaborate planning, showcases, and ornamental details
A popular style for retail stores eg drapers, shoe retailers but fell out of favor after the mid-20th century with building fronts becoming valuable retail space.