What did Manhattan look like back in the 1800s? How does modern Chicago stack up to its former self? Does San Francisco look much different now, compared to San Francisco in 1877?

Thankfully, the answers to these questions don’t need a lot of in-depth reading, or even a lot of Googling, all thanks to data visualisation videos from Commercial  Source. The company’s used its archived data and Google Earth’s 3D structures to plot building progress in those three American cities. Dates range from the mid 1800s all the way to next year – that’s right, you can even see a glimpse of the future, thanks to knowledge of future building and real estate plans.