just a quick thought. assuming many cities have fallen into desolation, they are not able to shift into the gear which have driven modern technology and the modern notion of travel. So what happens, they become dilapidated and discarded by human engagement. They are lucky enough to be notice at the speed of modern travel which accelerates by but inquire more time if expected to pierce the consciousness. They are not able to accommodate for the changes which occurs around them.

...

The insides of the architecture may support its function if the exterior is able to draw in the crowd.

Maybe a modern coating.... something poetically condensing, abstracting, and bringing acknowledgment needed to engage the traveler.