Cavernous opening completely encased in Karst limestone.

One of the largest collections of holy relics in the country.

The final resting place of the most famous sharpshooter.

This burger joint is named after everyone's favorite carnival prize and is adorned with a giant one over the door.

A gas station has taken the place of the home of the 19th American President.

One of Cincinnati's greatest fighters once trained at a now defunct gym in this Over-The-Rhine neighborhood.

This humble star-gazing center touts itself as the "Birthplace of American Astronomy."

This collection of Japanese luck idols beckons visitors with over 2,000 waving paws.

After a water tower painting was accused of being an ad, a simple fix was made that gave the city a motto.

What is it about mushrooms that makes people wish they lived inside of them?

Where beautiful signs live on forever.

The largest ancient burial mound in Ohio.

This stuffed pigeon of war had the very serious name "John Silver" until he lost a leg in battle.

The rose garden in Regent's Park where Pongo and Perdita met for the first time in Disney's "101 Dalmatians."

Rabbit Hash is a heaping slice of Americana from another era, with a very peculiar origin behind its unusual name.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

An ancient system of freshwater caves filled with animal bones, including that of species long-extinct.

A massive underwater sinkhole made famous by Jacques Cousteau.

An elaborate shrine dedicated to the four corners of the world unfortunately misses its mark.

Disney's abandoned animal island is now an overgrown ruin that was almost the coolest attraction ever.

Famously misunderstood wonder of the ancient world

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.