A shining, cold, black organ lies in San Francisco's financial district.

A pair of mutilated bronze octopuses slump at the base of the monument honoring California's admission to the U.S.

This print shop boasts one of the largest pinball arcades in San Francisco.

An artsy hidden staircase leads to breathtaking views of San Francisco.

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

The neighborhood church casts a breast-shaped shadow that locals have come to call the “two o’clock titty.”

27-room home built with the fortune of a sugar magnate.

This abstract sculpture is rumored to cast a hammer-and-sickle shadow once a year.

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

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

This enormous banquet-themed artwork honors over 1,000 notable women throughout history.

The narrow passages will challenge even the bravest driver.

This railway-turned-greenway provides a pedestrian link in downtown Detroit and celebrates urban artwork.

Once the tallest building in Detroit, this Gothic church houses some of the oldest stained-glass windows in the country.

Detroit’s Eastern Market has been transformed into an outdoor museum with colorful murals that address social issues and symbolize the city.

One man's attempt to create an artistic wonder on a run-down block in Detroit.

This sprawling bookstore spans four floors and has more than a million books in stock.

Glass and concrete building designed by Albert Kahn.

The birthplace of the Ford Model T is now a museum full of antique cars.

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.

Opulent downtown movie theater now houses cars as an indoor parking garage.

38-story baroque tower reflecting Detroit's rise, fall, and possible rise again.