Look closely and you’ll notice that the color changes a third of the way up the tower.

Washington's iconic carousel has a nice piece of Civil Rights history.

Home to a vast and influential collection of Shakespeareana.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

Home to items never before seen by the public.

This fort down the Potomac from Washington, D.C. was once the only defensive fort protecting the capital.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

The "Seinfeld" diner.

Hidden in an ordinary Midtown building is a one-room museum dedicated to the greatest escape artist.

A semi-scholarly approach to sex.

The massive machine creates cracking displays of indoor lightning.

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

A small granite block at this monument's base is the only part of Lincoln's Tomb outside of Illinois.

No one knows who painted this mysterious mural in a Penn State basement.

The souvenir got the company’s founder out of a pretty pickle at the World’s Fair.

Built in the 1970s, this curious modular home found new life as a sundae-shaped ice cream stand.

This extraordinary Depression-era expenditure was modeled after a postcard of a Mediterranean hotel.

Penn State's giant bug collection.

A soon-to-be-forgotten roadside spectacle loaded with local lore.

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

Behold the rickety wooden glory of the world's oldest operating roller coaster.

A local prank turned town icon.