A 58-story skyscraper in San Francisco is sinking and people are fighting over whose fault it is

Millennium Tower, a $350 million skyscraper completed in 2008, has sunk 16 inches and tilted two inches since it opened.

Now San Francisco's very own "leaning tower" is in the middle of a battle between the building's developers, residents, and city officials over who's at fault. The fight's far from done.

Here's what you need to know about the development and sinking of Millennium Tower.