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

A modernist landscape of water and sci-fi concrete.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

One part antique store, one part curiosities hodge-podge.

An essential stop before plundering, BYO Cutlass.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

An artsy hidden staircase leads to breathtaking views of San Francisco.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

A building so large that it has its own weather.

A spiritual vortex among the red rocks in Sedona.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

A beautiful geyser under environmental threat.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

The fairy tale castle of the "fairy-tale king."

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

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

Home to items never before seen by the public.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.