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Direct, creative challenge to Mother Nature's winter wrath.

The "World's Largest Underground Business Complex," a 55,000,000-square-foot city underneath Missouri.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

A floating museum that was sunk by a flood and left to rot in the tides.

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

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

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

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

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

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

This former industrial site has transformed into a community sculpture garden that hosts monthly Full Moon parties.

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

This Detroit ruin was once a gothic bastion of its community, but now it stands as a haunting ruin.

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

Abandoned concert venue legendary for its rock counterculture.

Where the Model T was made and the assembly line was invented.

World's largest Christmas store.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

This lighthouse and shipwreck museum keep a torch burning for the memory of the SS Edmund Fitzgerald.

Two dozen rescued bears roam (mostly) free at the largest bear ranch in the U.S.

This little barrel-shaped cottage by Lake Superior was once a cartoonist's summer retreat.

The site where Michigan launched its first rocket into space lies abandoned in the dense woods along Lake Superior.

Minnesota's highest point is a scenic vista marked by a plaque and armies of mosquitoes.