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

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

This spot memorializes one of the greatest plays in NFL history, unless you happen to be a Raiders fan.

The residents of the Neighborhood of Make-Believe live without much fanfare within the Pittsburgh Children's Museum.

An 18th-century Catholic church converted into an eccentric temple of music and bacchanalia.

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

A tiny, unmarked beer and whiskey bar above an Ethiopian restaurant in West Philly fails to conceal live bluegrass.

The oldest surviving botanic garden in the United States.

Yo, Adrian!

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

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

This beloved marketplace mascot poops money and grants good luck.

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

An Irish Memorial commemorating those who perished due to potato blight.

The final resting place of 121 victims of the RMS Titanic, 42 of which may never be identified.