Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

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

Enormous lake at the bottom of a unique cave system.

A collection of oddities including Dr. Kevorkian's suicide device, the Thanatron.

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.

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

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

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

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

An enormous, inside-out glass globe built in 1935.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

Where school buses go to die and be reborn as whimsical works of art.

The largest puppetry museum in the United States houses the world's most complete collection of Jim Henson artifacts.

The perfectly named cave drop is the deepest in the continental United States, almost matching the height of Seattle’s Space Needle.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

According to local lore, this narrow passageway through two large rocks was accidentally created by the devil himself.

All that's left of the quintessential "cabin in the woods."

Mysterious ancient boulder carved with petroglyphs in the mountains of Western North Carolina.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

Better known as the "Body Farm," this unique research facility has been studying how human bodies break down since the 1980s.

A hidden oasis just two minutes from downtown Atlanta.

Mai Tais and Navy Grog served up in one of the original tiki bars.