This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

Captain John Smith thought these cliffs were amazing in 1608 but sharks thought so 20 million years before him.

The longest escalator in the Western Hemisphere takes over three minutes to ride down.

The land is home to swimming ponies and a legendary 18th-century treasure.

A local farm's collection of unusual structures from a now defunct storybook amusement park.

A priceless collection of the Nation's cryptologic history.

An astounding collection of medical specimens, including bits of President Lincoln.

The trials and tribulations of marking Poe's grave.

One of the Cemestos prefab homes built to secretly house thousands of Manhattan Project workers.

One Confederate statue that accurately reflects the ugliness of its subject.

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

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

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

This award-winning men's bathroom was just too beautiful to not allow women to see.

The first full-scale tunnel built in America is short but scenic.

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

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.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

Walk the whole Mississippi River!

The secret city built by the Manhattan Project.

A collection of outdoor art by renowned muralist Robert Dafford depicts the history of a flooded city.

Kentucky's anomalous peninsula projecting into the Mississippi River, site of legendary earthquakes and local feuds.

Moonbows over Kentucky.