Enjoy a slice while browsing the world's largest collection of pizza memorabilia.

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

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

This strange, big-tailed beast became a Pennsylvania town's unofficial mascot.

Frank Lloyd Wright built this suburban synagogue late in life, but it stands among his most iconic masterpieces.

The first American department store, and home to the largest operating musical instrument in the world.

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

One artist's love letter to his city and its citizens plays out across dozens of bright murals painted on the sides of decrepit buildings.

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

Yo, Adrian!

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

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

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

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

Elevated freight railway turned wildly successful urban park.

Avoid gangster interaction while window-shopping.

Cryptic messages embedded in the New York City sidewalk.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

Bronze sculpture celebrating the relationship between Churchill and Roosevelt.

A kaleidoscopic warehouse-maze of handmade neon signs.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the first ‘Harry Potter’ film.

One part local history, 99 parts gruesome haunted house.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

Notorious artist squat renovated into legal studios.