One of the most popular megalithic sites in Ireland stands as a humbler version of Stonehenge.

The oldest inn in Kilkenny was established by the first convicted witch in Ireland.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

One of Savannah's oldest and most haunted cemeteries, featuring graves desecrated by Sherman's Union Army.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

The final resting place of New Orleans' most famous voodoo priestess.

The second oldest continuously operating bar in Louisiana.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

The United States's largest hand-dug well is topped with a state-of-the-art museum.

This replica small town lets visitors take a stroll through the story of progress in the U.S. via thousands of Americana artifacts.

Small plaque marks the spot, but the true center is located about half a mile away on a private pig farm.

It's big, it's a ball, and it's made of twine—the world's largest of its kind.

Self-built house and sculpture park where the creator can still be seen in a glass coffin.

Home to Hollywood history and a very special salt crystal.

A landscape of massive spherical boulders are the main attraction in this Kansas State Park.

A wonderful collection of all things Oz is nestled in the heart of Kansas.

This is not your typical jungle gym.

What was once a presidential estate is now an exotic menagerie and home to the Budweiser Clydesdales.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

Less a museum than a bizarre fantasy world created by artists and engineers.

A floating museum that was sunk by a flood and left to rot in the tides.

This former small town was destroyed not by the motor oil it sprayed the ground with but by the toxic waste that was added.

Giant granite rocks standing end-to-end like a train of circus elephants.