One man’s religious convictions led him to build this stone castle meant to withstand an apocalypse.

This abandoned nuclear cooling tower casts a shadow over a bucolic town.

While knives are the main feature in this store, visitors will also find dinosaur bones and meteorites.

For decades these polar bears have roamed all around a Nashville neighborhood.

A heartwarming message to those entering and departing Music City from above.

This stone incorrectly marks the 35th parallel, causing some territorial kerfuffles.

This museum dedicated to an oft-overlooked support industry features a surprisingly moving brass diorama of a man being saved from a sinking car.

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

This improbable contraption was passed down through five generations of industrious Tennesseans.

Ethereal alien hums and haunting whale songs emitting from...a giant sheet of vibrating metal?

Victorian-era Egyptomania left its mark on this Nashville landmark.

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

Follow the steps, and this roadside artwork will teach you how to dance.

The bad-ass ride of a soul legend, housed in one of the world's few soul museums.

This limestone outcropping was once a ceremonial site for ancient Native Americans.

This mansion turned restaurant was once a pitstop for Al Capone during his travels.

The "Jade Museum" is full of thousands of intricately carved works of art made from various precious stones.

Abandoned for 60 years, this submerged bridge was completely forgotten until the lake was drained.

Once decrepit and slated for demolition, now one of the longest pedestrian bridges in the world.

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

An oversized metal construction of Billy Tripp's moods going through life.

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

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

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