This next one (actually two) I think will be tough. Below is a satellite image of two major cities that are located in close geographic proximity to one another. Because the names of the cities were in the URL, clicking on the photo will not enlarge it.
Two hints – they are not Dallas-Fort Worth and a significant annual event will be celebrated in both cities on Friday, January 31st.
Congratulations to H. Pike for being the first to correctly identify City #6.
Good luck to all on guessing one or both of these major urban centers.