This may be the coolest website ever.

It's called "Timelapse" and uses satellite photography to illustrate how various regions and cities have grown since 1984.

You can literally watch 30 years of time in a matter of seconds.

Over the years you've heard how much Las Vegas has grown - WOW!  Through this website you can actually see it for yourself.

You can watch everything from glaciers melt to cities expand.  There's even an area where you can type in a specific city.

Type in 'Sioux Falls' and watch how we've grown over the years.

Click here to go to the website.