A gate overgrown by weeds evidently isn't used that much, which can happen with emergency exits, back entrances, or less successful urbanistic design. Unexpectedly it appears to be a quite common phenomenon because the examples shown here were collected quite easily in the course of one month.
1A
1B
Accidently a gate in a similar condition and style was found nearby in the same area:
2
This one is part of an intricate fire escape and it seems it hasn't been used for decades:
