Enormous lake at the bottom of a unique cave system.

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

The tragic reality of a town riddled with rumors of haunts, chemical spills, and serial killers.

When a guy acquired a free church, he hauled it away piece-by-piece to make it the tasting hall at his vineyard.

Annual Easter display made up of thousands of hand-painted eggs.

Ghost stories surrounded this “castle,” the only structure from a huge mansion that was never built.

The only presidential monument to display a late POTUS's actual casket.

The only depiction of Abraham Lincoln holding a weapon, and the names of all 9,000 Cuyahoga veterans of the Civil War.

Inside the unassuming cemetery chapel is a magnificent stained glass window and mosaics.

Abandoned since the 1950s, the streetcar lane beneath the heavily trafficked bridge lays empty and unused.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.

The heroic sled dog of the 1925 serum run is preserved in taxidermy.

This spectacular public market has got meat, fish, vegetables, baked goods, and enough kielbasa for a lifetime.

The home made famous by the 1983 holiday classic is now a perfectly preserved shrine to the movie.

Hell on Earth is actually a small town in Michigan where anyone can be mayor for a day.

Once America's tallest structure, now a Baltimore landmark.

A monumental statue of RCA's mascot now sits atop a historical society roof after a life of moving around.

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

A blank headstone topped with a pile of pennies marks the final resting place of the infamous assassin.

The man who first patented the Ouija board rests in peace beneath a headstone that playfully reflects that achievement.

The trials and tribulations of marking Poe's grave.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."