Check out this fantastic time lapse of Microsoft's original headquarters being built. Back in 1985, when planners plotted out the rising company's campus, Microsoft figured it would need 88 acres of land in a forest near a one-stoplight suburb of Seattle, called Redmond.
The first office complex was a total of four star-shaped buildings you see in the video, built over the course of seven months. Now, its 125-building campus sprawls over 500 acres -- a city unto itself. [Microsoft]