Mark Zuckerberg owns over 1,200 acres of land. Here's a look at his properties across the US, from a Hawaiian doomsday bunker to Lake Tahoe estates.

• Mark Zuckerberg has been quietly snapping up massive chunks of real estate for years.
• The tech billionaire has bought hundreds of acres of Hawaiian land.
• He's also splashed out on large homes in California's Silicon Valley and Lake Tahoe.

Mark Zuckerberg is one of the world's richest people, and his multimillion-dollar real estate portfolio reflects that.

The man responsible for Facebook is worth around an estimated $180 billion, Forbes reported, and part of that fortune includes assets like a sprawling California compound and acres of lush land on a Hawaiian island.