A clear blue swimming hole with hidden caves, still unexplored.

A small side chapel in Santa Fe's basilica is home to the oldest statute of the Virgin Mary in North America.

A place where the laws of nature seem to have gone completely berserk... but of course haven't.

One of America's first dinosaur parks gives a window into Depression-era paleontology.

A motel dedicated to Southwestern nostalgia.

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

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

The first declared National Monument in the United States.

A landscape of massive spherical boulders are the main attraction in this Kansas State Park.

Craggy concrete faces are hidden in the walls of this artificial cave along the San Antonio River.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

A 131-year-old wunderkammer of Texas history.

A modernist landscape of water and sci-fi concrete.

The internal railway of one of the biggest steel plants in America has been transformed into a linear park with unique industrial views.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

The only road through the heart of Glacier National Park.

The "World's Largest Underground Business Complex," a 55,000,000-square-foot city underneath Missouri.

Two hundred tons of pioneer artifacts were painstakingly recovered from a shipwreck at the bottom of the Missouri River.

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.

This Italianate Villa-style castle is pretty to look at, just keep off the private property.

Step back in time at this 1950s display home, built to showcase once cutting-edge electric amenities.

Less a museum than a bizarre fantasy world created by artists and engineers.