Who let the Colosseum go to shit? And how did that diagonal part

No answers. Did anybody take care of the structure after the Romans?

>>1358811
Probably not.
Renovating/fixing historical building is more a modern thing.

Catholic church couldnt give 2 shits about it, they often took parts off for building materials, most notably the marble cover

Nobody gave a shit about it for like 900 years after the fall of the empire.

The diagonal part is concrete reinforcements.

>>1358811
>Who let the Colosseum go to shit
The popes, they used it as a marble cave
>And how did that diagonal part come off so cleanly
Probably was cut in order to avoid subsequent
collapse after the earthquake that almost demolished it.