Mysterious rocks that ring musically when struck.

World's first "penitentiary," meant to be humane, drove men insane.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

A layered tribute to the work of mosaicist Isaiah Zagar.

These unassuming lighthouses have seen the first reading of the Pledge of Allegiance, the first wireless transmission, and more than one mystery.

A playground inspired by differential calculus dangles from the ceiling of the Liberty Science Center.

An eerie, decaying ghost town destined to fade into the forest.

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

The site where Poe "in great distress, and ... in need of immediate assistance" likely died.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

The farming museum contains an extensive taxidermy collection, including the world's largest stuffed horse.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

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

A 200-year-old bar with a cheeky name claims to have served Edgar Allan Poe his final drink.

The trials and tribulations of marking Poe's grave.

An Olympic hero stripped of his medals is buried in a town he never visited, which took his name after his death.

This Philly cemetery is the eternal home of many famous area residents, including Rocky Balboa's wife.

The origin of this mechanical boy was a mystery until he revealed his maker by writing it in perfect cursive.

This abandoned asylum was once a state of the art facility before devolving into one of the most deadly mental institutions in American history.

The Dover International Speedway is home to a towering, concrete-skinned, racecar-hungry behemoth.

This weeping, 10-foot-tall sculpture was a maquette for a 9/11 memorial.

WWII-era bunkers are hidden under the beaches of this picturesque park, which is still scattered with wartime watchtowers. .

Enchanting gardens surround a derelict mansion, all hidden in plain sight behind a stone wall.

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