A condom-covered Thai restaurant that is more concerned with birth control than food.

A 19th-century horse lover's bequest led to the construction of this unique fountain in Chicago.

Wisconsin's most celebrated export gets the royal treatment on I-94.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

The 606 is a decade in the making.

This surprising gem is a world-class archeological museum hidden at the University of Chicago.

Rifle through images of skyscrapers, Worlds Fairs, and more in the largest public postcard repository in America.

This cheerfully-named branch of the Chicago River is the fetid result of years of blood, entrails, and meatpacking waste.

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

A 400-foot-tall tall map of Chicago makes this once-ignored building stand out.

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

A "Titanic" superfan changed his name to Jack and set up this strange shrine to the blockbuster, complete with Korean food and Tarot readings.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

60 feet of towering steel balances gracefully.

This bleach-white graveyard overlooking the ocean is accessed through a tunnel.

Rusting, graffiti-covered tanks litter the beach of this island, once used by the U.S. military for target practice.

This limestone cave offers an incredible view of the Río Grande de Arecibo valley.

Legend tells how a Spanish soldier disappeared from this isolated sentry box without a trace.

A hollow cement depiction of time's inexorable effect on the human body.

Home to a protest movement, a bombing, and a dramatic change in labor history.

In one Santa Monica parking lot a mushroom cloud made of chains heralds a message of peace.

Giant origami crease patterns engraved in Santa Monica intersections may even be visible from space.

The blinking light atop the iconic landmark has been sending secret messages for decades.

The space-age building is home to one of the few remaining rotating restaurants in America, and the only one that inspired a 1980s sitcom.