Yo, Adrian!

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 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.

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.

In which a local geological marvel becomes a quaint roadside attraction.

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

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

This might just be the TARDIS of bookstores.

Dr Barnes' $25 billion private collection of art and arboretum.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

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

A layered tribute to the work of mosaicist Isaiah Zagar.

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

This Texas windmill field celebrates the power and majesty of the very winds that blow.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

The Grand Canyon of Texas.

A pair of giant legs paying homage to a poem, a king, and it would seem, socks.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

In the fictional world of Kcymaerxthaere, this was the former home of the Marshal of Gravity and the site of his tragic death.

This evocative New Jersey statue memoralizes the Polish victims of a Soviet massacre.