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

Detroit’s downtown castle is one of the oldest structures in the city.

The world’s largest Masonic temple was saved by the White Stripes.

The concrete shell of an industry giant remains as a playground for graffiti artists, auto scrappers, and paintball warriors.

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

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

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

Enormous small-business mecca in the Midwest, serving dozens of artists.

Berry Gordy Jr.'s old home was the original headquarters of Motown Record Corporation.

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

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

The Beaux-Arts aquarium boasts a vast collection of saltwater and freshwater fish on an island in the Detroit River.

A Beaux-Arts triumph set to become Ford's innovation campus

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."

The preamble to the U.S. Constitution written entirely from vanity license plates hangs in the Smithsonian museum.

Home to items never before seen by the public.

A much-maligned monument to teetotalism.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

Washington's iconic carousel has a nice piece of Civil Rights history.

An overlooked memorial honoring the local Washington residents who died in World War I.

A celebrity from the late Cretaceous period.

The national park was once a plantation estate.

One of the largest artillery pieces in the world sits in a Washington D.C. parking lot.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.