"Million Dollar Listing New York" star Ryan Serhant isn't just hawking a behemoth ranch in Colorado ... it's practically a chunk of the United States!!!
Serhant's truly testing his battle cry "expansion ... always, in all ways" by getting his hands on one of the most epic real estate listings you'll ever see. It's the Gateway Canyons Ranch, and it currently belongs to Discovery Channel founder John Hendricks.
It's listed at a whopping $280 million and it oozes luxury. The main house alone is 22,000 square feet. It features 8 bedrooms, 8 bathrooms, 4 floors with an elevator, infinity pool, movie theater, planetarium and, get this, its own fossil room!!!