Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

A recreation of an Old West apothecary full of curios.

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

Stairs often replace streets on the steep slopes of this old mining town.

The massive, incredibly rare instrument is over 11 feet tall with a range so deep it goes lower than humans can hear.

A geological mystery on Camelback Mountain.

In Tucson a giant metal snake helps pedestrians cross a busy highway.

This striking public art installation is suspended above a public park, designed to gently move in the breeze.

On the outskirts of a reborn ghost town, a decaying post office remembers the bad old days.

A spiritual vortex among the red rocks in Sedona.

An urban laboratory.

Dramatic river bend surrounds a natural red-rocked pedestal.

Most-visited and most-photographed slot canyon in the American Southwest.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

If you want to talk to the Pope you will have to stare down this surreal vision of Jesus rising from a nuclear hell.

Breathtaking and huge 430 year old maps of Italy.

A contemporary fresco movement illustrates the region's rich history.

This steep cable railway has been hoisting passengers in the heart of Québec City for over a century.

Montreal's giant farmer's market is a foodie's best friend, especially in the winter months.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

This impressive working clock made of 16,000 plants changes its flowers twice a year.