The world's longest known cave system.

Visitors to this arboretum are greeted by three smiling giants crafted from sustainable materials.

A collection of full-size movie monsters opened to the public.

A simple but powerful tribute to the 20 victims of the 1692 witch trials.

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

This beloved roadside attraction welcomes visitors with his signature neon smile.

A suspended garden, now gone, once hung in the middle of this abandoned church.

An abandoned relic of the city's failed experiment with below ground transit.

Historical structures and natural wonders await visitors to this preserve.

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

Mussolini gave Cincinnati a bronze statue of Romulus and Remus suckling at a wolf's teats.

This magnificent Cincinnati graveyard is also a popular public park.

An art deco ice cream shop covered in vintage train station tiles.

Pillars made of 700 pieces of luggage climb to the ceiling of Sacramento Airport's baggage claim.

The world's largest piece of copyrighted artwork.

Millions of numbers carved in glass represent the tattoos forced upon victims.

Silverware in the sidewalk outside a grocery store cements this neighborhood’s Italian culinary history.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

Ralph Waldo Emerson spent two years living here decades before it became a Frederick Law Olmsted-designed park.

This giant head is all that remains of a once proud statue that survived an earthquake but not a fall off of a wagon.