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

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

Despite being one of the most photographed vistas in the Rockies these twin peaks are rightfully known as the "Deadly Bells."

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

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

An architect's childhood fantasy treehouse made real.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A beautiful geyser under environmental threat.

The humble Hoosier roots of a famed Broadway composer.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Elevated freight railway turned wildly successful urban park.

The fifth-longest natural arch in the world, and the longest outside China.

A lesser-known part of the Kinsey Institute is this impressive collection of art, artifacts, and material culture related to human sexuality.

A stunning, abandoned limestone quarry in southern Indiana provided the stone to erect the Empire State Building.

This kitsch eatery is chock-a-block with bric-a-brac.

A Seattle oddities shop brimming with Victorian-era gems and antique curio.

This former coal gasification plant found a curious second life as a popular public park.

A colorful architectural gem in Seattle's uniquely modern Central Library.

A wall of chewing gum moonlights as collective art.

A museum dedicated to the history and exploration of both popular music and science fiction.