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