An ideal wedding spot that is almost too ideal.

This elaborate towering structure was once famed for its revolutionary height.

A local prank turned town icon.

This huge, disused viaduct is now a crumbling concrete underworld of covered in years of graffiti.

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

Golden and naked, the figure that was once the highest point in New York is all that remains of the second Madison Square Garden.

A planned settlement in Pennsylvania once housed the aristocratic refugees of the French Revolution.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

This stone tower marks a lookout point over the historic Washington Crossing, and maybe some buried treasure.

This dramatic rail curve was once the target of a failed Nazi attack.

Long hidden under grime, the politically radical murals of a little known Yugoslavian master are finally getting their due.

Behold the rickety wooden glory of the world's oldest operating roller coaster.

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

A tradition unlike any other, this marks the site of the annual Groundhog's Day tradition.

A field of nothing but boulders which resembles a giant's gravel driveway.

This lush forest valley was once mined for lumber to the extent that it was once nicknamed "The Pennsylvania Desert."

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

There aren't too many operational funiculars around, but Pittsburgh has two!

This Pennsylvania cave holds evidence of the oldest known inhabitants of North America.

The oldest farmer's market in America is so ancient it was approved by the King of England.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

A failed piece of Orientalism has become the proud symbol of a community.

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