This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

Since World War II people have been decorating this stretch of the Yuma desert with signatures arranged out of rocks.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

An Old West film set seen in countless TV shows and movies is open for the public to explore.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

A rare tour of a commercial jet assembly plant, held inside one of the largest buildings in the world.

A secret fresh water spring for animals and humans alike hidden along the most famous road in the United States.

The massive machine creates cracking displays of indoor lightning.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

The library of every book lover's dreams.

A historic home with ties to the abolition and suffrage movements.

This statue commemorates the meeting of the most influential minds of the women’s rights movement.

What remains of the simple red brick chapel where the women's rights movement began.

A near tragic event on this bridge helped inspire the classic film "It's a Wonderful Life."

Pluto is still considered a planet in Ithaca, New York.

The world's second-longest burning light bulb.

Dozens of feral felines rule a segment of Hollywood's only graveyard.

Resting place of Hollywood's immortals is also site of summer film screenings.

Medical and zoological curiosities for sale.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

Travelers leave tea kettles in a remote part of Death Valley as part of a mysterious, decades-old tradition.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.