Elon Musk founded SpaceX in 2002 with little more than a handful of staff, an empty office in Los Angeles, and a mariachi band.

Today the rocket company employs more than 5,000 people, has received about $1.6 billion in funding, and is increasingly disrupting a storied (and expensive) space industry.

SpaceX has branched out from relatively small orbital rockets to heavyweight lifters that undercut the competition four-fold.

It's also developing the most expansive satellite internet network in history while pushing to build spaceships capable of sending 100 people to Mars at a time.

To get that work done, though, it's investing millions in remodeling and building new facilities all over America.

Here are the most important locations Musk and his army of SpaceX employees do their work to reach for the stars.

This story has been updated. It was originally published at 10 a.m. EDT on April 1, 2018.

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SpaceX: Where Elon Musk's Rocket Facilities Are Located, What They Do