The only arched bridge made of stone on the entire Mississippi River.

When flour explodes, it's not a pretty sight.

Eight "Guardians of Health" protect this art deco water tower from pollutants and bacteria.

The Real LegoLand.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

A tribute to the twin ideals of religion and patriotism, built by a Catholic priest from rocks, glass, and innumerable found items.

This long unused shot tower on the Mississippi remains a point of pride for a small city in Iowa.

For just a few bucks, this Iowa funicular will let you feel like an 1800s fat cat.

The remains of a World War II munitions factory still haunt the fields of this Twin Cities suburb.

Illegal drag racing two stories beneath Chicago’s streets.

This protected area in Lake Huron contains some of the world’s best-preserved shipwrecks.

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

The world's only known button museum.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

This memorial plaque remembers a strangely shallow maritime disaster known as "Chicago's Titanic."

First planned industrial community in the United States.

Astounding collection of coin-operated games and automata.

The 80-foot tire that looms over Michigan's I-94 was once a Ferris wheel in the New York World Fair.

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

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

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

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

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

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