Here we journey back in time to reveal historic images of the world's greatest cities, and to find out what's changed and what hasn't.

Then and now. Those are three potent words for anyone interested in the history of a city. It's easy enough to know what a city looks like today, of course. But if you want a full understanding of ...

The encounter highlights how much Kabul and other Afghan cities have changed in the 20 years since the Taliban, who mainly hail from rugged rural areas, last ruled the country.

MSPBJ 35th Anniversary: Twin Cities buildings then and now (photos) expand. MSPBJ animation via Getty Images. By Dirk DeYoung – Editor-in-Chief, Minneapolis / St. Paul Business Journal.

In the late 1800s, W.E.B. Du Bois was commissioned by the University of Pennsylvania to document social problems in Philadelphia’s majority-Black 7th Ward. Going door-to-door, Du Bois conducted ...