Glass and concrete building designed by Albert Kahn.

Once a bastion of its community, this gothic cathedral now stands as a haunting ruin.

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

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

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

The bones of an old zoo crumbling in the shadow of a new one.

Advice-columnist's bell tower, paid for with pennies.

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

An ornate Detroit church, left empty and ravaged by time.

A jaw-dropping "megalibrary" that turns book-browsing into a geometric adventure.

Gilded heaven for philatelists and architecture freaks, still in full working order despite sitting atop tremulous ground.

This "City of Books" holds a museum, library, and the complete personal book collections of five of Mexico's greatest thinkers.

The only castle in North America to ever house European sovereigns.

Superstitious? Discover the witchy side of Mexico through its largest esoteric market.

A museum in the former home of Marxist revolutionary Leon Trotsky.

An island filled with hundreds of hanging, decomposing, decapitated dolls.

A crumbling cathedral condemned by an earthquake.

This Costa Rican chapel is the most metal church in the world, literally.

A pocket of jungle amidst urban expansion in Panama.

This softball diamond has a culture all its own.

A huge, bustling local market in Panama City.

His music once banned in Communist Cuba, John Lennon is now immortalized in bronze by Castro, who considers Lennon a "fellow dreamer."

In terms of history and architecture, this is one of the most remarkable cemeteries in the world.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.