The maximum security facility was once thought to have "the bloodiest 47 acres in America."

The oldest bar in Missouri is hidden within a limestone brewery cellar more than 50 feet underground.

A subterranean haunt where wine and homemade biscottis are always on the menu.

This mosaic-covered bar is brimming with curated curios.

If there's another drive-through golf-cart bar in a bat-filled cave on top of a mountain, we don't know about it.

The world's largest man-made underground caverns offer unparalleled underwater wonders.

The history of the treatment of mental illness, illustrated in all its gory detail, and housed in an asylum.

This abandoned prison castle has become an imposing gallery of graffiti art.

Once an ambitious nature spa, these forest ruins now provide a serene monument to failure.

European castle ruins in an American state park are actually the product of death and grief.

Maine's oldest diner also happens to win acclaim for its elevated comfort food.

The railroad tunnel nicknamed the "Bloody Pit" for taking the lives of hundreds during its construction.

These towering spires and glowing walls are carefully crafted from hundreds of thousands of icicles.

An artificial tree in the University of Connecticut greenhouses holds a collection of orchids, mosses, and other tropical epiphytic plants.

At this small shop off a dirt road in the forest, the specialty is eel the owner caught and smoked himself.

An abandoned castle owned and ignored by Masons carries a cursed history.

Believe It or Not, Ripley once called this chiseled mountainside “New York’s Mount Rushmore”.

The remains of what was once the world's steepest passenger funicular.

A plaque on a rock dedicated to a famous, forgotten author, and put in an impossible place.

This massive Maya archaeological site is home to the tallest man-made structure in Belize.

These enigmatic ruins continue to vex archaeologists.

A natural swimming hole that was once a ceremonial center for Mayan priests.

A devastated ruin in the south of Belize where British explorers claimed to unearth the Mitchell-Hedges Crystal Skull.

An important Mayan religious and trading center dating back to 200 BC.