The SS United States on Wednesday left Philadelphia to begin its journey to becoming the world's largest artificial reef. It will be sunk off the Florida coast.

The SS United States is getting towed down the East Coast on its way to the Florida panhandle, where it will be sunk and turned into an artificial reef.

The SS United States, a retired ocean liner that became a Philadelphia waterfront staple, is on its way to a new home in Okaloosa County, Florida, to become part of an artificial reef.