21 Stunning Photos That Show How Much City Skylines Have Changed over the Years

You can tell a lot about a city by looking at its skyline.

Over the decades, many cities have exploded in size and have introduced ambitious works of architecture to the world.

Two decades ago, Dubai was a relatively undeveloped city. Now it’s filled with gleaming skyscrapers. And cities like Toronto look virtually unrecognizable compared to a century ago.

Here are some cities whose skylines look completely different, several decades later.

The permission to use some of these photos were obtained through RENTCafé. Article copyright: www.insider.com.