An ode to the friendship between four Pacific Rim countries.

The world's largest wooden trestle stretches across this desert canyon in Anza-Borrego Desert State Park.

This futuristic bridge is one of the longest self-anchored pedestrian bridges in the world.

A sculpture of the famous photograph stands on San Diego's "Greatest Generation Walk."

The remains of this rugged homestead ranch offer a brief glimpse into a bygone era.

A rare wayfinding portmanteau of “Street” and “Avenue.”

This historic tower in the California desert promises visitors a "vortex of good vibes".

The remnants of an early automobile route across shifting sand dunes can still be found in the deserts of Southern California.

A strenuous, unofficial trail leads to spectacular views in one of America's most remote national monuments.

This quiet chapel was central to a community of settlers who reclaimed an abandoned fort.

Visitors to this public park will also find the ruins of an old western fort.

During World War II this was the site of an "honor camp" used as a prison for draft dodgers, Native American conscientious objectors, and Japanese-Americans—including a man who brought his case against the camp to the Supreme Court.

After a short-lived attempt to bring America in line with the rest of the world, this road was left in metric.

The first Protestant church in Arizona and only Gothic Revival style adobe church in the world.

An old saloon in the West filled with history, and according to some, a few dozen ghosts.

In Tucson a giant metal snake helps pedestrians cross a busy highway.

This church on a Tohono O'Odham reservation has stood since 1797.

A stone pillar marking the location of the westernmost battle of the American Civil War only honors one side of the conflict.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

The unusual burial monument of Arizona's first governor.

The first permanent memorial to a unique secret weapon of World War II.

This striking public art installation is suspended above a public park, designed to gently move in the breeze.

A spiritual vortex among the red rocks in Sedona.

Hidden inside this Arizona fast food franchise is an in-depth exhibit on the famed WWII counterintelligence program.