The oldest continually operating golf course in the United States.

An abandoned railroad tunnel transformed into a creepy path for hikers and cyclists.

Priceless space junk on display in front of a local Dairy Queen.

The site of America's first commercial oil well essentially disappeared after the town went bust.

Where the oil industry began.

Francis Julius LeMoyne built this crematory in 1876; he was the third person to be cremated here.

Nothing says indulgence like a 1,500-pound chocolate castle.

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

A retrofuturistic art installation in the Pittsburgh Airport.

10,500 square feet of pinball housed in former dollar store and home to the last playable "Thunderball."

One of the oldest surviving lock houses on the Ohio River.

This public space is speckled with the eerie remnants of a defunct amusement park.

Antiques and recycled art surround this cabin designed to resemble a 19th-century schoolhouse.

An American flag was erected for every day that passed during the Iranian Hostage Crisis.

Check out the 125-pound chocolate reindeer in the back of this candy shop.

A nine-hole golf course in Pennsylvania hasn't charged a greens fee since its founding in 1914.

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

The only statue of its kind to commemorate Washington's beginnings as an officer of the British Colonial Militia.

A living maritime paradox still floats in the same lake where it was built and resurrected... or was it?

A quirky collection of outsider art made from automobile parts.

"Where the ducks walk on fish."