A natural swimming hole that was once a ceremonial center for Mayan priests.

This old residential building was once the largest flour mill in the world.

One of two giant blue cockerel statues erected with an intentional double meaning.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

These tiny pine-covered islands have inspired art and poetry for centuries.

Where hundreds of Japanese civilians committed suicide to avoid being captured by American soldiers during WWII.

A 400-foot-tall tall map of Chicago makes this once-ignored building stand out.

Illegal drag racing two stories beneath Chicago’s streets.

The longest and widest floating bridge in the world.

Though strikingly beautiful, Seattle's other railway station is now largely forgotten.

This former coal gasification plant found a curious second life as a popular public park.

This sandstone mansion was the home of two of Oregon's most important pioneers.

A heavenly experience, right here on Terra Firma.

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

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

More than 700 species live within this murky marvel of a swamp on California's coast.

This ancient village provides insight into the complexity of the pre-Columbian Fremont Culture.

Centuries of crashing waves carved out this small hole in the rock, which lights up at certain parts of the year.

The Flatiron Building's storied West Coast cousin is a lot more into religion.

The oldest U.S. Government building in California, and it's State Historic Landmark #1.

Prone to disastrous fires, the city of San Francisco has the Guardian, a fireboat gifted by residents, to watch over them from the bay.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.