Here lies Lilly E. Gray, an alleged "victim of the beast," but the reason long remained a mystery.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

Colorful Native American paintings are hidden within this small cavern.

The fossilized remains of ancient California redwoods.

Once thought to be the oldest living tree in the world, Methuselah was germinated before the Egyptian pyramids were built.

These legendary stone steps were once used to haul coffins up the rockface.

One of the few places where you can visit a cenote and Maya ruins at the same time.

The verdant mossy ruins of a Franciscan monastery lie in the remote Sintra hills awaiting exploration.

This medieval sanctuary's tree-framed door looks like a portal to a mythical realm.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

The coffin-shaped church was once home to monks who slept in coffins.

The unusual burial monument of Arizona's first governor.

Every Christmas, one Arizona city makes the most of its dry climate by creating an arid desert tannenbaum.

A mysterious "wedding cake" castle in the middle of the urban desert.

Thousands of Mexican Free-Tailed Bats soar around an abandoned storm drain at sunset each summer.

This striking public art installation is suspended above a public park, designed to gently move in the breeze.

Fantastic collection celebrating the final send-off.

An oddities shop packed with twisted treasures inspired by Oscar Wilde and Edgar Allan Poe.

A private collection of massive steel monsters guarding a Texas pipe works.

There is an unmarked red button hidden over Houston's Buffalo Bayou that is just begging to pushed...

This 2,000-year-old tree inspired the nursery rhyme "Rock-a-bye Baby."

To enter the lower hall of this temple, you must first walk through a dragon.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

The behemoth beasts engaged in an epic battle is the second-tallest statue in the contiguous United States.