An outsider art studio that created a piece of work so popular they had to turn mainstream.

A replica of the home of a famous fictional troll family.

Incredible miniature towns and buildings created and decorated with thousands of tiny rocks.

This simple, broken column marks the final resting place of one of America's most famous explorers.

These early tent-shaped grave coverings are unique to Appalachia.

A key producer of charcoal iron in the early 1800s, the structure still stands today.

Veritable museum of 20th century country music history.

This tiny 19th-century tunnel was built so a man could move his cows from one field to another.

The R&B singer's modest church guarantees a religious experience, regardless of your beliefs.

Walk the whole Mississippi River!

Visit this playground of waterfalls, caves and sinkholes.

An engraved boulder marks the spot where Patsy Cline's life ended in a plane crash.

The world's largest collection of porcelain "veilleuses-theiere," or night light teapots, includes four that belonged to Napoleon.

An unknown Hall of Fame in Jackson, Tennessee.

A Black Forest cuckoo clock theme park features one timepiece big enough to walk inside.

This historic mansion was built as a symbol of love between a husband and wife.

A small Richmond island dotted with the remnants of hundreds of years of history.

A turn-of-the-century architectural marvel built on healing mineral springs and salt licks.

Symbolic attempt to overcome the issues of life.

One man's vision and a labor of love of many.

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

More than five miles of underground passageways.

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

Intricate storybook scenes are tucked inside these shadow boxes, which are tucked inside a library in the Pocono Mountains.