I went back downtown a week ago for a solitary photowalk and I'm finding a lot more inspiration within the brick and concrete. I really like using the Rolleiflex for urban photography because it's light and you get a big negative out it for printing.
The two best times to walk around downtown is first thing Saturday morning and rush hour during the week. You get very different photographs even standing in the same spot.
I also want to explore the nooks and crannies downtown, the small side streets, you never know what you might find.