I am not sure if this is what you're asking for, but I'll give it a shot!
Graffiti is considered a subject matter, because it vandalized private property, and causes employees or other people to clean up after someone else's mess.
The answer that best fits the blank above is GOTHIC CATHEDRAL. Gothic cathedrals are actually common architectures during the 12th century in France and Germany. This originated from the Romanesque architecture and is being well known by its soaring and open spaces, flying buttresses, and stained glass windows.
