Steepest flood safety railway in the entire world.

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

This titanic java kettle is one of the many kitschy landmarks located along America's OTHER famous highway.

The mortal remains of a Russian prince, priest and paranormal investigator who came to America in 1792.

The final resting place for the famed creator and narrator of "The Twilight Zone."

Originally a cemetery, this city park remains speckled with a handful of scattered gravestones.

A bronze statue of Mister Rogers in the neighborhood where he grew up.

The ruined remains of a coal mining ghost town are hidden within the woods.

One man's real life disfigurement inspired a lasting local legend surrounding an eerie tunnel.

Home of the only civilian casualty at the Battle of Gettysburg.

The only geyser in the state of Pennsylvania is caused by pressure from an abandoned coal mine outside of the ghost town Centralia.

When the Austin Dam failed it destroyed much of Austin...and then it failed again.

Buildings that dynamite couldn't bring down were abandoned because of bathroom issues.

This historic furnace was once used to produce cannonballs during the Civil War.

An abandoned stretch of highway, deteriorating next to the operational one.

The last street in Pittsburgh that's paved with wood.

These disused steel furnaces are now haunting ruins that may one day be a national park.

The site of the little-known Pennsylvania battle that sparked the Seven Years' War.

Despite violent work crews and massive delays this abandoned canal tunnel was built to last into the modern day.

The antique hotel still has a jail in the basement, though the cockfighting ring is long gone.

Berkeley Hot Springs presents to you "the only outdoor monument to presidential bathing."

A larger-than-life statue of America's favorite sundae marks the place it was invented.

A pyramid commemorates the birthplace of James Buchanan, the 15th president of the United States

A quiet, gothic haven nestled between Pittsburgh's Squirrel Hill and Point Breeze neighborhoods.