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

The tiny church offers succor to travelers driving by, but only eight at a time.

A small town market proudly displays numerous taxidermied animals along its walls.

City Council meetings still happen in this historic building, impeccably preserved on the inside.

Shoreline strewn with the remains of ghostly fallen trees.

A glimpse into the "Logging Capital of the World" at a time when there was far more forest and far less machinery.

One man's eclectic collection of treasures found at sea.

Stroll through a wonderland of stupendous moss-covered trees.

A tribute to the Nirvana frontman hides beneath the bridge that was the singer's beloved hangout spot.

This unassuming cheese empire in rural Oregon churns out more than 150,000 pounds of cheese each day.

Single runway interrupted by a busy road that cuts across its middle.

Red, white, and blue painted steps along with a Union Jack celebrate the outcome of Gibraltar's 1967 referendum.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

Touching this little fossil embedded in the wall of a grand mosque-cathedral may make your wishes come true.

No one knows how this Pacific Northwest spruce tree came to have so many trunks.

The flow from this waterfall sometimes comes out of springs below its rim.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

A showcase of engineering might that was also symbolic of westward expansion.

Commonly referred to as the most photographed Victorian home in the United States.

Humboldt's human-powered sculptures race across land and sea for days on end in a wacky quest for dominance.

This ultra-modern California span is actually a titanic solar clock in disguise built by famed architect Santiago Calatrava.

The long, arduous journey of the stones of the Abbey of New Clairvaux.

Hidden inside a gift shop that doubles as a museum, this gargantuan yo-yo can only be operated by crane.