Originally conceived as part of a proposed Arizona State Capitol building in the 1950s, this structure built in 2004 stands as a monument to the architect's legacy.

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

America's only nuclear missile silo open to the public.

A reproduction of earth's many biomes.

This iconic 1958 tower welcomes air travelers to Tucson with neon-lit letters and architectural style.

Despite a recent paint job, the factory still sits empty.

Browse an impressive collection of passenger and military aircraft dating back to World War II.

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

This bomb shelter-themed bar has barely changed since it opened.

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

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

The sun acts as a key that only fits this giant keyhole twice a year.

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.

A chain of bells connect the California Missions and honor the legend of the "King’s Highway."

Inside the Wayne County airport is an amazing collection of lights and sounds.

A painted-over wall in Detroit originally built to segregate a black community from an adjacent white development.

Where the Model T was made and the assembly line was invented.

The 80-foot tire that looms over Michigan's I-94 was once a Ferris wheel in the New York World Fair.

These enduring murals depicting a distinctly Marxist tribute to capitalism could not even be defeated by McCarthyism.

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

To truly appreciate Detroit's landmark skyscraper, you have to step inside.

You can climb to the summit of Black Mountain, as long as you sign the waiver.

Bananas are often left for the first monkey America ever recovered alive after being launched into space.

One person’s lost luggage is another person’s treasure.