However, a city's transformation is never more apparent than when you see it from above.
Aerial photographer Jason Hawkes, who says he has been "flying around the world for many years, hanging out of the side of helicopters," captures stunning aerial views on cities like London.
Based just outside of the capital, Hawkes flies over London more than anywhere in the world, and over the years has captured its transformation, often logging his latest flights and images on Twitter.
"I started flying over London when I was just 21, having been commissioned by Random House for a book," he told Business Insider. "Nowadays I fly over town most weeks, shooting the ever-changing skyline. It's a real privilege being able to view such a great city from above, and a fantastic location to photograph."
Hawkes searched through his library of images to show us a "then and now" view of the constantly evolving city that is London. Scroll down to see - from above - how the capital has changed from 1995 to 2017. You can also see more of Hawke's work here.