Beautiful views of the surrounding hills and birds of prey can be found at this sanctuary.

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

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

Town full of spiritualists, some of whom are mediums, is still in full swing after 130 years.

This small road tunnel is the only place where you can cross beneath the Erie Canal.

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

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

A modern ghost town whose inhabitants were driven away by the growth of nuclear power.

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

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

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

The former home of a disgraced local priest now hosts a mysterious secret supper club.

The Catskills retreat of naturalist writer John Burroughs.

Not even a series of devastating fires could keep this odd castle in upstate New York from bouncing back.

Featuring the largest CinemaScope screen in Pennsylvania, this drive-in has entertained moviegoers for more than half a century.

Intricate storybook scenes are tucked inside these shadow boxes, which are tucked inside a library in the Pocono Mountains.

One of the U.S. Forest Service's only mansions is outfitted with a dinner table for floating food.

A train station that was abandoned by the coal industry and was later converted into a cocktail bar.

Board a mine car and descend the #190 slope 300 feet underground into the Clark Vein of coal.

It would take 35 firetrucks to fill this enormous glacial pothole.

This peaceful gem in upstate New York was chosen as the future home of the 14th Dalai Lama's Library and Museum.

The quarry was abandoned over 100 years ago, after a massive ammunition explosion ended in tragedy.

The shared home of a utopian commune that practiced "free love" a century before the hippies.

A field in which God and his son Jesus purportedly appeared to a young farm boy named Joseph Smith.