Beneath the southern end of the Golden Gate Bridge is the “Gibraltar of the West Coast,” a fort built to protect the San Francisco Bay from naval attack.

The historic building's ornate stained glass fixture has survived the devastating 1906 earthquake, ensuing fires, and multiple redevelopment attempts.

A walk down memory lane in the heart of one of San Francisco's most notorious neighborhoods.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

This giant 200-year-old ginkgo is one of the largest in the United States.

Once disputed as the largest sundial in the world.

The unusual burial monument of Arizona's first governor.

A mysterious "wedding cake" castle in the middle of the urban desert.

In this small Phoenix taxidermy emporium, you can find everything from a squid in a jar to a freeze-dried toad.

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

This grave marks the passing of a historic Jane Doe whose identity remains a mystery to this day.

The city of Halifax still bears the scars of the largest explosion prior to the atomic bomb.

The restored and active Victorian-era final resting place of San Francisco.

An oft-overlooked, magically musical monolith that stands majestically between Arlington Cemetery and the Iwo Jima Memorial.

Founded by members of the Tohono O’odham Nation, this one-room joint's James Beard–winning fry bread is light as a cloud.

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

This elaborate towering structure was once famed for its revolutionary height.

The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

There’s a hidden military meme engraved on the World War II Memorial.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

This grinning pup statue is all that's left of what was once a ubiquitous Bay Area diner chain.

Nestled in the heart of San Francisco’s bustling Financial District stands a unique homage to the Mayan and Beaux Arts.

The only visible piece of San Francisco's most famous shipwreck.

San Francisco’s century-old Christmas Tree.