I have no idea why, but I've seen more hawks in urban settings than in rural ones. I've gone on hawk-viewing expeditions to Hawk Mountain, PA, and managed to miss every raptor. Yet I've spotted several hawks feeding on the lawn at my parents' house in West Chester, PA. I even saw one getting entangled in a scrubby pine tree next to a parking lot off Route 70 in Cherry Hill, NJ.
At present, there is a live webcam showing three eyassers (baby hawks) in a nest in Philadelphia, PA. This nest of Red-tailed hawks is on a window ledge of the Franklin Institute. You can see the busy traffic beyond the nest on the Franklin Parkway. There is also a Facebook site for the Franklin Institute hawks, called Franklin Hawkaholics. It's worth a look.