An ode to the friendship between four Pacific Rim countries.

Every weekend, people gather here for a brief chance to see their loved ones on the other side of the United States–Mexico border.

This San Diego museum, housed in a former Navy training facility, is dedicated to preserving women’s historic achievements.

This volcano rises like a giant anthill from the plains below, with a road spiraling up to the rim.

A multi-storied adobe complex has been inhabited for more than a thousand years.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

This top-secret nuclear bunker hidden in a Bosnian mountain has been converted to a modern art exhibition space.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

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

A hand-built folk art installation covered with messages of God's love.

The rocks in this arid basin leave trails of movement behind them.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

A huge musical instrument played by the ocean.

The highest point in Iowa, while not that impressive to mountain states, has earned its own monuments.

Most comprehensive museum in America devoted to one ethnic group.

A place of great reverence for Trekkies everywhere, a hero's future birthplace.

A number of gruesome unsolved murders have turned this simple home into a morbid tourist trap.

The largest Walleye statue in the world calls this Minnesota town home.

This tiny Minnesota city tried to secede from the Union as a last-ditch effort to fix its crumbling water system.

This Minnesota-shaped forest is actually located in the state it is shaped like.

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

America's silhouette includes 100 square miles of wilderness jutting into Canada thanks to an old mapmaking error.

A riverside park built around the ruins of a massive dam that collapsed in 1909.