A historic covered bridge is but one example of an oddly prevalent American urban legend.

This park contains a number of standing stones meant to heal and inspire.

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

This little-known Revolutionary War fort is supposedly haunted by the ghosts of its past.

The headquarters of the Fraternitas Rosae Crucis, complete with Rosicrucian pyramids, all in the Pennsylvania woods.

Over 100 concrete munitions bunkers are all that remain of a Pennsylvanian village seized by the US government.

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

In which a local geological marvel becomes a quaint roadside attraction.

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

A rare view of a preserved Victorian science museum.

Mysterious rocks that ring musically when struck.

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

Where America's first doomsday cult awaited the end of the world.

A toxic ghost town sitting atop a massive coal fire.

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.

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

These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.

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

These beautiful ruins deep in the Pennsylvania woods are thought to have been a ski lodge or a speakeasy, but no one really knows.

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

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

This abandoned Poconos resort is haunted by a history of kitschy romance and a violent fugitive.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.