The tragic reality of a town riddled with rumors of haunts, chemical spills, and serial killers.

A hidden network of subterranean passageways lies tangled beneath Indianapolis' bustling City Market.

A half-mile long and three stories high, this bridge over the Des Moines River Valley mimics a descent into a mine shaft.

Imagine playing a version of Legends of the Hidden Temple, but with a distinctly Southern Gothic flare.

A Victorian mansion, painstakingly reproduced to appear just as the the Munster's family home did on TV.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

An emerald-green grotto just a short trip from Austin.

The largest self-built castle in the U.S., six decades in the making.

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

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

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

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

Most-visited and most-photographed slot canyon in the American Southwest.

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

This charmingly homemade amusement park has been growing for 40 years.

This frequently-photographed waterfall takes only a short hike to visit.

Hollowed out cedar log tubs set in an ancient towering forest.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

One devoted couple has donated multiple recreations of Michelangelo's sculptures to this South Dakota town.

An overgrown collection of miniature buildings still stand as evidence of one couple's obsession with The King.

A theme park featuring a replica of Noah's Ark built to the measurements specified in the Bible.

Whiskey lovers, this is your happy place.

A reclusive Memphis neighborhood is home to decades worth of misunderstood Masonic folk art.

These half-buried combine harvesters just off Route 66 are an homage to the Cadillac Ranch.