Where can I get pictures that show changes in places?

I have this fixation with US city skylines and places – and have collected a small number of pictures thus far that were taken in Times Square, or has a view that includes the famous Empire State building, so on and so forth.
I recently got asked by my gf where the old west was – and what was it, so it got me to wiki from Google (as you’d probably expect) and on the wiki page involved there were photos taken from 1850 or 1851, and it got me thinking if there was a place where I could obtain pictures that show changes of locations over the years.
Even better, the same shot taken at the same place in successive year or something akin to that. Any ideas?