A hidden gem, named after a San Franciscan icon, offers spectacular views of the Pacific Ocean.

A 300-ship graveyard, with a few still visible at low tide.

A modest reminder of treacherous waters at the Golden Gate.

This mountaintop beacon is only lit three times a year but shines like some kind of all-seeing eye.

It is locally loved and ridiculed for literally looking like poop.

It should come as no surprise that the world's largest artichoke lies in the town that calls itself the "Artichoke Center of the World."

I Street Bridge is the heaviest swinging center bridge in the United States.

Each summer, the migratory bats living beneath the bypass form "batnadoes" at dusk.

On the summer solstice each year, shadows align with a 14,000 square foot painting to reveal a secret message.

The palatial McDonald's that inspired Wesley Willis.

Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.

A display of magnificent stained glass windows is the first exhibit of its kind.

This rooftop sign has been confusing Milwaukee-bound airline passengers for decades.

Nicknamed the "Grand Canyon of the North," this open-pit mine in Minnesota has a much shorter history.

A magnificent waterfall nestled in the heart of the El Yunque National Forest.

On a clear day, you can see all the way to the Virgin Islands from the top of this observation tower built in the 1960s.

A giant granite cross remembers missionary Father Frederic Baraga, and his safe passage across an angry Lake Superior.

The spaceship-like theater, which is still in use, was one of the most popular exhibits at the 1964 New York World's Fair.

A "Texanic" (gigantic Texas) collection of Art Deco architecture at Dallas' historic Fair Park.

The longest floating boardwalk in the United States.

This downtown Dallas art installation is always on the lookout.

A massive, photogenic gate designed after a traditional hand drum used in the regional noh

This massive section of quay destroyed by an earthquake is preserved to remember the past.

This reconstructed castle was once the base of the “Devil King” who almost united the feudal warring states.