Yes, I tend to search for bullet holes around the city a lot, which is a weird thing to do now that I said something about it.
If you go town through Krefelderstraße there is a bunch of them on the buildings. The cathedral has some places with grenade shrapnel as well. Some iron gates around the city have little indents from bullets as well. There are a bunch of tanks abandoned in one of the forests to the south, near Brand. Some streets have "gaps" where houses were never reconstructed.
70 something years later and the destruction is still very much visible.
https://en.wikipedia.org/wiki/Battle_of_Aachen