I have tons of photos of urban grit, it would take me a while to sift through all of them so here are just some recent shots
This building is now torn down, but it was in downtown Htown
Houston
Cairo, Ill
Cairo
North St. Louis
North STL
Grit in a small Chinese town north of Qingdao
Grit in a now torn down Hutong in Beijing in 2007
Completely abandoned downtown Helena, AR
And one last one for now, Pine Bluff, Arkansas