Meet your friends, marry your true love, or tell your enemies to kiss your butt under this historic Pittsburgh timepiece.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

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.

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

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

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

Pennsylvania's highest point is spotted with boulders which were pushed to the surface by nothing but cold.

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

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

Nope, not Washington Irving's house.

On this island, you suck away your garbage via an elaborate pneumatic tube system.

Manhattan and the Bronx have been playing tug-of-war over this former island neighborhood for more than a century.

Manhattan's Thirteenth Avenue was made on landfill then deliberately destroyed — apart from one small, obscure block.

Twice a day one of these tragic bronze mariners drowns with the tide to remember all those the sea has taken.

The greatest real estate coup of all time.

Peek through the gates at this oasis from the city, full of Old English charm.

A former insane asylum despised by Nelly Bly and Charles Dickens is now fashionable apartments.

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

This abandoned subway station can still be seen on regular commuter trips.

Great place to have a drink and a bite to eat in an atmosphere laden with New York's Bohemian past.

Red frames showcase remnants of one of New York's original subway stations.

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.