The grave of America's 11th president is not in some grand monument but instead it's hidden away on the grounds of the Tennessee Capital.

The site of the one of the most deadly train wrecks in American history.

Over a dozen Native American earth mounds dating back over 2,000 years dot this Tennessee archaeological park.

This popular park is home to a sea serpent sculpture that now overshadows the twisted history of its creation.

One man has spent decades faithfully constructing this unique brick and cinderblock castle.

It may take some time to locate, but it's sure to warm even a heart of stone.

The small cave that housed Tennessee's "first citizen."

Dinosaurs invade a suburban Nashville neighborhood.

This former maximum-security prison is creepy, sobering, and supposedly haunted.

All you ever needed or wanted to know about America's favorite whiskey, but not a drop to drink.

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

This head-spinningly bizarre Depression-era art cave is wall-to-wall quartz and Jesus.

This replica of the Greek structure is in the heart of Nashville.

Though illegal, city officials have made an exception for this work of art.

Four metal statues of massive animal penises stand outside the university's Animal Sciences building.

An abandoned Victorian house transformed into a museum and store filled with taxidermy and vintage goods.

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

What may be Boston's finest Art Deco building, located in the city's Financial District.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

A New England ghost town features a trail of boulders etched with intriguing life lessons.

An eccentric inventor's castle home with its own indoor weather system.

Strange beasts lurking in a garden are all that remain of a quirky, short-lived theme park.

This ancient sinkhole-turned-healing-pool is a treasure trove of archeological discoveries and may even be the Fountain of Youth.

Gutted airplanes slowly decay in a Florida field.