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

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

This church in Pittsburgh is home to the largest collection of religious relics in North America.

A stone arch leads to a cavernous 1930s spring house tucked away in the Pennsylvania woods.

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

One of the steepest streets in the United States makes an intriguing challenge for cyclists.

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

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

These crudely shaped folk giants may be the the second most photographed statues in the U.S.

A true roadside icon standing on the same plains that the herds once roamed.

The rocks of a certain area of Butte, Montana give off a musical ring when hit.

New fungal and bacterial species call this deadly lake home.

A smoke stack so large, the Washington Monument could fit inside!

Rusting, graffiti-covered tanks litter the beach of this island, once used by the U.S. military for target practice.

Rumored to be the famed pirate's lookout tower, this historic stone structure is now just watching for tourists.

The world's most active stratovolcano is almost always erupting.

An extravagant western hotel where every floor is the "ground floor."

This monumental Jesus is often referred to as "Our Milk Carton With Arms."

This century-old roadside attraction is full of bizarre rock formations.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

This haunted hotel built on natural springs once served as a hospital for a quack doctor promising a cure for cancer.

This ancient octopus-like tree was saved from destruction thanks to shady reporting.

One of the oldest living oak trees in the Southeast.

The uniquely-designed winter home and sculpture studio of Anna and Archer Huntington.