The Four Corners Monument: This is the only place in the United States where four states meet at a single point: Colorado, Arizona, New Mexico, and Utah.
The Eisenhower-Johnson Memorial Tunnel: Located along I-70 west of Denver, this tunnel pierces the Continental Divide at an elevation of 11,158 feet, holding the distinction of being the highest auto tunnel in North America.
Home of the Cheeseburger: The term “cheeseburger” was trademarked in 1935 by Louis Ballast, who owned the Humpty Dumpty Drive-In in Denver.