These Interactive Maps Compare 19th Century American Cities to Today

As mind-blowing as science is these days, it's probably safe to say that we're not going to invent a time machine within the next century. Through the magic of code, though, there is an entertaining alternative in the world of interactive maps. Obviously, The Smithsonian is on it.

The magazine recently dipped into David Rumsey's collection of over 150,000 maps to find some of the best representations of American cities over the past couple hundred years. With some simple programming, they were able to overlay images of vintage maps of some major cities onto satellite images from today. The results are fascinating.

See maps of New York City, Denver, Los Angeles, San Francisco, Denver, and Washington, DC