Lovingly nick-named the "Brick Dick" this municipal tower was winner of the World's Most Phallic Building Contest.

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

Largest tulip festival in America, includes fireworks, a parade, and a carnival.

World's largest Christmas store.

A sealed test tube said to hold Thomas Edison's dying breath was given to the inventor's friend and mentee, Henry Ford.

This shallow cave got its name from copious amount of human bones found inside.

A popular place to pick up prehistoric coral fossils from the time when Michigan was an ocean.

This national park on the shore of Lake Michigan features remarkable dunes that lie at the heart of a Chippewa legend.

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

Island where motor vehicles are banned -- home to the only carless highway in the United States.

Hell on Earth is actually a small town in Michigan where anyone can be mayor for a day.

This midcentury chapel is a bold architectural statement and a symbol of Indiana's Lutheran heritage.

A hidden network of subterranean passageways lies tangled beneath Indianapolis' bustling City Market.

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.

"Where the ducks walk on fish."

A museum dedicated to the history & joys of the trail & your best chance to see hikers throwing up ice cream.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

One of the steepest streets in the United States makes an intriguing challenge for cyclists.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

This historic Ohio bridge is adorned with fanciful locks left behind by loving couples.

A monument to the “unrecognized dead” of the tragic 1876 train crash.

This campus museum commemorates a national tragedy.

Evidence from a brutal 1880s murder is on display at this former infirmary house.