A rotating cast of guys and dolls in front of a Washington, D.C. building.

The first memorial dedicated solely to the Black troops who fought for the Union.

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

Part of a WWII submarine is lurking outside the Washington Navy Yard parking lot.

One of the largest artillery pieces in the world sits in a Washington D.C. parking lot.

The U.S. Navy’s preposterously detailed mini battleship took 77,000 hours to complete.

This unique historical monument features large concrete spheres designed to resemble fallen stars.

This church built atop a gas station promises to "equip you for the next stage in your life’s journey."

This forgotten boat elevator was an engineering marvel in its heyday.

Hidden behind musical flora and forgotten for over a thousand years, this cave is now a neon dream.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

The island of Lanai in Hawai'i is a paradise for cats and cat lovers.

Centuries-old hoofprints and wagon tracks reveal themselves after a good winter storm.

The Cape Cod house that whaling built.

According to folklore, Vermont's slanted windows were installed to keep witches from flying into the house.

The sweetest graveyard in the world is filled with headstones for dearly de-pinted ice cream flavors.

Politicians, bureaucrats, and military officers gathered in this field near the Capitol to settle their disputes with blood.

The final resting place of the tragic king and queen of the Jazz Age is tucked away in a small Maryland graveyard.

The small first-floor apartment where the author wrote her Pulitzer Prize-winning book 'Gone with the Wind.'

Civil War soldiers, captains of industry, and paupers all interred on historic grounds.

Scattered around Atlanta are little doors with big charm.

An underground magnet for ever-changing street art.

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

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