One of many reminders of Tesla's scientific contributions overlooks the falls which inspired him.

A museum collection honoring the long history of the FDNY is held in a disused Manhattan fire house.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

There must be a pun in this haystack somewhere...

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.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

A popular European tradition makes its way to the states on one of America's most famous bridges.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

A piece of baseball history is preserved in a Pittsburgh parking lot.

This quarter-mile tunnel under the Bluff in Pittsburgh bends at a 45-degree angle.

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.

The last remnants of Fort Pitt also hold the distinction of being the oldest structure west of the Allegheny Mountains.

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

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.

Within this beautiful Pittsburgh cemetery, a unique headstone bears witness to one man's eternal love for Jaws.

Despite being stolen multiple times, this civic electrician's street corner Snoopy won't be stopped.

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

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

Yo, Adrian!

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

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