Time changes everything—people, places, and entire cities—and the X page @ThenvsNowPic1 has compiled some of the most amazing Then vs. Now pictures to prove it. Whether it’s childhood ...

Going through this cool collection of old-school photos placed next to their modern-day versions is like hopping in a time ...

"Synthesizing a photorealistic time-lapse is also very challenging," explains Martin, "as the input photos look very different ... since the changes even over a span of years can be too minute ...