Boulder, Colorado
NIST-F1 Cesium Fountain Atomic Clock
The clock that sets them all.
Places I want to go
Places on this traveler's wishlist.
Boulder, Colorado
The clock that sets them all.
Wheat Ridge, Colorado
A seven-story 1920s mausoleum outside Denver houses thousands of remains.
Colorado Springs, Colorado
This Boeing KC-97 tanker is now a restaurant for aviation lovers.
Golden, Colorado
The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.
U.S. Air Force Academy, Colorado
Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.
Colorado Springs, Colorado
Strange red rock formations that have been attributed to a higher power for hundreds of years.
Colorado Springs, Colorado
The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational.
Colorado Springs, Colorado
This grand stone tower was dedicated to a famed American humorist almost by coincidence.
Colorado Springs, Colorado
The moving metal works of one troubled artist can still be viewed on his front lawn... for now.
Morrison, Colorado
In the middle of a suburban Denver neighborhood is a cave that once provided solace for a prominent Ute chief and his family.
Littleton, Colorado
A prehistoric rock shelter that's literally in someone's backyard.
Manitou Springs, Colorado
These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.
Colorado Springs, Colorado
The haunted reputation of these abandoned Colorado train tunnels is probably not helped by the terrifying spiked fence.
Nageezi, New Mexico
A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.
Morrison, Colorado
This massive home was constructed by one of the greatest conservationists in Colorado history.
Nederland, Colorado
One of the few surviving Panama Canal steam shovels stands outside a tiny Colorado mining museum.
Rye, Colorado
The largest self-built castle in the U.S., six decades in the making.
Florence, Colorado
This naturally-sourced hot spring is now home to a clothing-optional resort.
Bloomfield, New Mexico
The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.
Farmington, New Mexico
Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.
Cañon City, Colorado
This 19th century jail was mainly used to incarcerate the drunk and disorderly.
Cañon City, Colorado
The site of the "Bone Wars" between two rival paleontologists during the dinosaur rush of the 19th century.
Cañon City, Colorado
This razorback ridgeline has doubled as a scenic drive since the early 1900s.
Kayenta, Arizona
Ancestral Puebloan ruins, natural arches, and box canyons abound in this seldom-visited corner of Monument Valley Navajo Tribal Park.