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

This geothermal hot spring hides beneath a slowly growing mineral dome.

Home to items never before seen by the public.

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

A toxic ghost town sitting atop a massive coal fire.

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

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

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

The final resting place of New Orleans' most famous voodoo priestess.

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

A sharp bend in a dramatic river canyon cut through red rocks.

An emerald-green grotto just a short trip from Austin.

Standing atop 2nd-century Roman ruins, this church is one of the oldest and most iconic in Old Cairo.

One of its engravings is believed to be among the first representations of medical and surgical instruments.

Known as the Sistine Chapel of Egypt, this tomb houses some of the most well-preserved paintings in Egypt.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

Ozymandias’ time-keeping temple.

America's oldest Eastern European synagogue provided the immigrants of crowded Lower East Side tenements a space of sanctuary.

Everyone from Mark Twain to Teddy Roosevelt has a pipe hanging from the walls of this historic chophouse.

A bit of retro transportation flair preserved in the world's largest department store.

Slyly buy a shake in the Parker Meridien lobby.

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

An unassuming secret door once led to a legendary watering hole.

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.