Bacteria and algae give the salty water its bubblegum hue.

A 16th-century Andalusian palace.

The final resting place of the great navigator, or maybe his brother.

America's only nuclear missile silo open to the public.

The final resting place of a space program monolith.

A shop full of natural curiosities, carnivorous plants, and costumed taxidermied mice.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

A nondescript building that's been functioning as a speakeasy for nearly a century and a half.

The trials and tribulations of marking Poe's grave.

San Francisco's newly reopened hands-on science museum.

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

A collection of 20th-century automata, penny arcade games, and musical contraptions.

Home to items never before seen by the public.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

The world's longest known cave system.

Each year these high desert hills are absolutely covered with poppy flowers in a surreal show of nature.

Finale of "William Tell Overture" can be heard as drivers pass over grooves in the road.

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

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

The magic's in the hole!

Its buzzing collection honors vibrator history.

"Looks so real, it's scary!"

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

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