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

The largest clock face in the United States is twice the size of Big Ben and infinitely more ad-sponsored.

One Pittsburgh musician's decades-in-the-making memorabilia collection is on display at this rock-n-roll curio shop.

With 3,000 bikes on display, the world's largest bicycle museum includes some famous rarities.

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

The last street in Pittsburgh that's paved with wood.

This historic Pittsburgh tennis complex is a rare example of natural red clay courts.

The god of wine stares out at passersby on this busy Pittsburgh thoroughfare.

Mutant vegetables, transgenic mosquitos, and atomic rodents span the walls of this one-of-a-kind museum.

A grand New York post office that is home to mailman Santas, scraps of postal history, and a pneumatic mail system.

This plot of old-growth forest is the largest surviving remnant of New York City's original woodland.

The famous author's cottage hideaway.

An unassuming stone building houses New York City's oldest seismic station almost 30 feet below the Bronx.

Holding the most bodies of any cemetery in the United States.

The former hotel where Tesla invented the radio.

Become a prohibition rebel.

Nikola Tesla's former home contains an homage hidden from plain sight.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

This museum dedicated to the history of the medical bone trade and human osteology.

A memorial marks the library lobby where Langston Hughes' ashes are buried.

This speakeasy continues the Prohibition-era legacy of Harlem's jazzy Swing Street.

Harlem park dedicated to compulsive hoarders killed by their own junk.