COLORADO

The cheeseburger was invented in Denver: In 1935, Louis Ballast, the owner of Humpty Dumpty restaurant in Denver, claimed to have invented the cheeseburger.

The Grand Mesa is the world's largest flat-topped mountain: This mountain is located on the Western Slope of Colorado and covers about 500 square miles.

Leadville is the highest, by elevation, incorporated city in the United States.

The Dwight Eisenhower Memorial Tunnel is the highest auto tunnel in the United States: This tunnel was originally the highest vehicular tunnel in the world when it opened in the 1970s.

Trail Ridge Road is the highest continuous highway in the United States: This road starts in Rocky Mountain National Park and crosses the Continental Divide.

The road to Mount Evans is the highest paved road in North America: This road climbs to 14,258 feet above sea level.

Colorado has two state songs: The first state song was "Where the Columbines Grow" by A.J. Flynn, which was adopted in 1915.

Colorado is nicknamed the "Centennial State."

Colorado became a state in 1876, 100 years after the signing of the Declaration of Independence.

Colorado is nicknamed "Colorful Colorado."