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.

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

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

Huge masonic hall in Philadelphia with lavishly themed rooms.

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

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

A layered tribute to the work of mosaicist Isaiah Zagar.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

These unusual rooms on wheels are holdovers from the 1960s.

Outdoor exhibits explore the contributions of European, African, and indigenous peoples to American frontier culture.

Hear, smell, see, taste, and touch history at this immersive Civil War hospital.

Edgar Allan Poe's old dorm is now a shrine to the author's legacy.

Enchanting gardens surround a derelict mansion, all hidden in plain sight behind a stone wall.

An intricately designed junk art house with four extravagant junk art cars hidden in the suburbs.

A monumental statue of RCA's mascot now sits atop a historical society roof after a life of moving around.

This beloved Baltimore spot features caged dolls, a giant Pez collection, and many, many mannequins.

This free, take-a-book shop seems like a trick but isn't.

This nine-story building is the oldest standing skyscraper in D.C.

The first purpose-built art gallery in the United States is once again open as a center of craft arts.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

A three-story tower of books about Abraham Lincoln is one of the more unusual monuments to the president.