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

A local prank turned town icon.

The pop art icon's gravesite is broadcast 24 hours a day on his museum's website.

Instruments, apparatus, and rare books all relating to chemistry and its related sciences.

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

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

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

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

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

A beautiful oddities shop crammed with strange and morbid curiosities.

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

The home and studio of a visionary woodworker now stands as a museum and example of his artistic genius.

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

The oldest surviving botanic garden in the United States.

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

Yo, Adrian!

This titanic java kettle is one of the many kitschy landmarks located along America's OTHER famous highway.

This Old Testament garden features 100 plants from biblical times.

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

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

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

The internal railway of one of the biggest steel plants in America has been transformed into a linear park with unique industrial views.

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.

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.