Step inside Lucy, the world's largest "elephant."

This 13-foot smiling peanut in Georgia helped Jimmy Carter win the 1976 presidential election.

A former copper mine which became a truly unsuccessful prison.

This is not your typical jungle gym.

America's original house of worship for Spiritualism, the religious movement based on communing with the dead.

This historic train station has been converted to a locomotive themed hotel.

Along a California highway is a kind of Jurassic Park made of metal.

Unicorns, elephants, and bears, oh my!

The city of Rockford, Illinois is symbolically protected by a quartet of fittingly stony sentinels.

Spiral labyrinth hidden in the hills above Oakland, CA.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

Giant granite rocks standing end-to-end like a train of circus elephants.

"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

Three hundred years of preserved Spanish colonial history in San Antonio.

This dilapidated ship carcass covered in trees is a striking sight.

Palatial mansion estate used in films including "Flowers in the Attic" and "The Witches of Eastwick."

These free-roaming horses were once destined to disappear from the land.

Board a mine car and descend the #190 slope 300 feet underground into the Clark Vein of coal.

An abandoned 1920s school with a mysterious history.

Ruins of an American Civil War iron forge still survive today.

A trio of colossal statues spread across a Dallas neighborhood chart the emergence of a giant robot born of a locomotive and spilled gin.

A Mars simulation in the southern Utah desert.

The show pony of cave systems, Fantastic Caverns manages to live up to its name.