There are 40 species of bats in the United States, and 18 in the state of Colorado.
Robert Redford attended the University of Colorado on a baseball scholarship.
Denver, Colorado, has 300 days of bright sunshine a year - more annual hours of sun than San Diego, California or Miami Beach, Florida.
The world's largest silver nugget, weighing 1,840 pounds, was found in 1894 near Aspen, Colorado.
France is the largest Western European country. Its area is slightly less than twice the size of Colorado.
The Colorado ski resort of Vail is located in the area formerly known as Gore Creek Valley.
One hundred years ago, visitors to Cave of the Winds in Colorado carried candles and lanterns along ghostly, dark halls that seemed to have no end. Today, cave enthusiasts can spend an hour or more with an authentically dressed 1800s guide, viewing truly spectacular rooms in the cave, using only the illumination from handheld lanterns. One of the world's oldest show caves, Cave of the Winds is filled with eerie nooks, crannies, tunnels, and chambers that once were believed to be the homes of gnomes and fairies.
The streets of Victor, Colorado, once a gold rush town, are paved with low-grade gold.
California, Arizona, New Mexico, Nevada, Utah, western Colorado, and southwestern Wyoming comprised the territory taken from Mexico following the Mexican War in 1846.
Colorado's capital of Denver is the largest metro city in a 600-mile radius - an area almost the size of Europe.
In January 2000, the U.S. Postal Service issued a Grand Canyon stamp. However, the photo used was a reverse image, giving a mirror image of a view from the South Rim. The previous year, the Postal Service mistakenly labeled the Grand Canyon as a Colorado landmark on 100 million stamps. Those stamps were destroyed. A trade paper estimated the reprinting cost for the current mistake at $500,000, and so it was decided to distribute them with the reversed image.
Historians claim that the first valentine was a poem sent in 1415 by Charles, Duke of Orleans, to his wife. He was imprisoned in the Tower of London at the time. In the United States, Miss Esther Howland is given credit for sending the first Valentine's Day cards. Commercial valentines were introduced in the 1800s and now the date is very commercialized. The town of Loveland, Colorado, does a large post office business around February 14.
Denver, Colorado lays claim to the invention of the cheeseburger. The trademark for the name "cheeseburger" was awarded in 1935 to Louis Ballast of the Humpty Dumpty Drive-In. Ballast claimed to have come up with the idea while testing hamburger toppings.
Sidewalk acrobatics that might frighten horses are outlawed in Denver, Colorado.
Scientists have estimated a fly ball will travel about seven feet further for every 1,000 feet of altitude. With an approximate elevation of 1,100 feet, Bank One Ballpark in Phoenix, Arizona is the second highest facility in the major baseball leagues; only Coors Field in Denver, Colorado is higher.
The highest place people have settled in the United States is Climax, Colorado. It is at a height of 11,360 feet above sea level.