Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

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

Yo, Adrian!

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

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.

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

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

The residents of the Neighborhood of Make-Believe live without much fanfare within the Pittsburgh Children's Museum.

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.

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

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

The oldest farmer's market in America is so ancient it was approved by the King of England.

In which a local geological marvel becomes a quaint roadside attraction.

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

A toxic ghost town sitting atop a massive coal fire.

The US Navy's only submarine museum is also home to the world's first nuclear submarine.

Life-size bronzes of the Grinch, Cat in the Hat, Yertle the Turtle, Sam-I-Am, and the Lorax—and the author himself.

The world's largest public collection of PEZ memorabilia.

Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

Who knew the Devil's domain was a hot spot for tubing?

This lovely hilltop tower was specifically built to withstand 100 MPH winds.

A parade of antique steeds offers a quirky ride through history.