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

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

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

This Philly landmark has a giant butterfly pavilion, three floors of insect displays, and withstood a $40,000 heist.

Contrary to popular belief, this secluded statue doesn't represent Pennsylvania's founder.

The oldest of only three existing statues of the great novelist stands in a city he did not care for.

Golden and naked, the figure that was once the highest point in New York is all that remains of the second Madison Square Garden.

The oldest surviving presidential residence in the United States.

A daily replay of the experiment that proved the rotation of the Earth.

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

Yo, Adrian!

Dr Barnes' $25 billion private collection of art and arboretum.

A museum dedicated to the strange and extravagant costumes and memorabilia of the mummers, a tradition older than Philadelphia itself.

Huge masonic hall in Philadelphia with lavishly themed rooms.

This meticulously extracted nervous system allegedly came from a 19th-century custodian who donated her body to science.

This Philly cemetery is the eternal home of many famous area residents, including Rocky Balboa's wife.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

The world’s first penitentiary, meant to be humane, drove men insane.

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

This modern pedestrian bridge on the Yarra River was modeled after an Aboriginal fish trap.

Every hour a secret compartment drops from this giant pocket watch, revealing a lovely surprise.

The city’s oldest gateway to the galaxy lies at the entrance to the Royal Botanical Gardens.

A colorful street named for the legendary Australian rock band.

One of the oldest theaters in Australia, it's also said to be haunted by a performer who died on stage.