A natural history wunderkammer in the middle of the desert.

This collection of neon icons is preserving Arizona's history, one sign at a time.

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.

A reproduction of earth's many biomes.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

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

The Giant Lemon of Lemon Grove.

One of corporate America's best-kept secrets is also one of the most publicly displayed.

Public opinion is still divided on this enormous sculpture in front of Baltimore's Penn Station.

A symbol for the opposition to nuclear power around the world.

This colorful artistic feature atop a Danish art gallery allows visitors to stroll through a rainbow.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

A perfectly circular stronghold constructed in the 10th century is now a nucleus of Viking culture housing a museum, village, and reenactment of an epic Viking battle.

Old Danish castle immortalized in Shakespeare's Hamlet.

A 19th-century subterranean reservoir repurposed as a contemporary art cave.

This bridge's unique architecture honors nautical heritage and encourages self-awareness.

The only surviving piece of Copenhagen's 16th-century defensive wall.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

The last masonry skyscraper ever built reveals a transitional moment in architectural history.

Illegal drag racing two stories beneath Chicago’s streets.

This awkward aquarium sculpture is one of the strangest statues in Chicago.

An outdoor urban gallery of large-scale artworks by the world's most influential street artists.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.