This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

A park full of outsider art, created by college students studying outsider art.

A stone arch leads to a cavernous 1930s spring house tucked away in the Pennsylvania woods.

Delicate Wurlitzers, creepy clowns, and The Noid all share space in this insane explosion of kitsch history.

The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

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

A layered tribute to the work of mosaicist Isaiah Zagar.

Mysterious rocks that ring musically when struck.

A rare view of a preserved Victorian science museum.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A sealed test tube said to hold Thomas Edison's dying breath was given to the inventor's friend and mentee, Henry Ford.

Museum dedicated to literary greats of the Romantic Period is also the home in which Keats met his untimely end.

Frank Lloyd Wright died a year before construction on his largest public project even began.

The pop art icon's gravesite is broadcast 24 hours a day on his museum's website.

A remarkable time capsule of American manufacturing deep in Maryland coal country.

The universally beloved children's television figure is interred on a high hilltop in one of western Pennsylvania's oldest cemeteries.

A museum commemorating the Donora Smog, which killed 20 people in October 1948 and sparked national outrage over air pollution.

This beautiful stone arch bridge wasn't even expected to stand for one day, but people have been crossing it for centuries.

A macabre farm reserved part of its 222-acres for dead bodies, all in the name of science.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.