Enormous lake at the bottom of a unique cave system.

A winding path built in secret on the edge of the continent.

America's most famous piece of self-built architecture.

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

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

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

A walk through the historic city center, under the streets of Seattle.

A house carved into a rock in the 1940s.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

New York's oldest magic store.

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

Elevated freight railway turned wildly successful urban park.

A giant Troll lurks under one of Seattle's oldest bridges.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

A layered tribute to the work of mosaicist Isaiah Zagar.

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

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

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.