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

One of the few working locomotive roundhouses in the United States.

The only surviving prototype for Buckminster Fuller's house of the future.

Inside the Wayne County airport is an amazing collection of lights and sounds.

This museum was once the home of industry titan Matilda Dodge Wilson.

More than 7,000 gallons of water pour over these cascading red quartzite waterfalls every second.

A fitting attraction for the corn capital of the world.

It has an American Dream Car exhibit, Europe's largest Formula One collection, and many, many mannequins.

This Nazi-built amphitheater was constructed on a sacred mountain site used by various German cults.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

This historic funicular system combines the old with the new while offering delightful views over the surrounding valley.

It's good luck to be mocked by this monkey.

This large midwestern cavern features impressive rock formations and an underground waterfall.

These molds for fiberglass statues have formed an eerie, accidental sculpture park.

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

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

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