What looks like a simple quaint estate in rural Pennsylvania was in the 18th century home to a small monastic community.

This English-inspired Maryland garden is home to acres of opulent plant life including bushes shaped into an entire fox hunt.

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

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

The ruins of this long-abandoned unsuccessful gold mine can still be found.

The semi-reclaimed ruins of this canal were once part of an ambitious plan to reroute the mighty potomac.

This former Cold War missile control site played an important role in the creation of GPS.

Walk a trail through a historic Quaker town that outlawed slavery in 1777 and was a major waypoint on the Underground Railroad.

Remnants of a storybook amusement park hidden behind a strip mall.

Pennsylvania's highest point is spotted with boulders which were pushed to the surface by nothing but cold.

This abandoned Victorian-style house was built in 1884.

The Home and murder site of the witch of Rehmeyers Hollow.

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

An outlandish shoe shaped house built by an eccentric millionaire.

Maryland's first (and last standing) toll house on America's first federal road established the state as the "Gateway to the West."

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

This one-room cabin where the young colonel slept during the French and Indian War.

Steepest flood safety railway in the entire world.

Collection of trolley cars in the woods represent one man's attempt to preserve transportation history.

A pre-Industrial Age iron furnace and the site of a nearly-forgotten piece of Black history.

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

No one knows who painted this mysterious mural in a Penn State basement.

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

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