Always disgusting to see every kind of major building in (Western?) cities smeared by graffiti etc, be it in use (and under constant cleaning) or disused (ghost stations...). There's zero appreciation of the building itself, the expenses for its construction/upkeep or the possibility of putting it into use again, preserving the structure and materials in the best way possible. It's what I always notice first about this type of documentation, it's quite disappointing.