This angular brutalist playground turns playtime into modern art time.

The massive, incredibly rare instrument is over 11 feet tall with a range so deep it goes lower than humans can hear.

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

One of corporate America's best-kept secrets is also one of the most publicly displayed.

A monument to one of the few Olympic flames ever to be lit outside of the host city.

A statue honoring 44 continuous years of greeting passing ships.

More than a century after her death, Little Gracie Watson remains one of Savannah's most often-visited residents.

A once-groundbreaking power plant turned into a hotel and mini-museum of archeological and geological wonders.

This kitschy tavern is also home to rare early editions of "Treasure Island."

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

The world-record holder for the longest bridge stretching continuously over water.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

A museum and shop on Bourbon Street located in the former home of the second Voodoo Queen of New Orleans.

A famous—but endangered—plant is on view at an unassuming nature preserve a quick drive from Myrtle Beach.

Twenty-eight years after this local landmark was washed ashore by hurricane Hugo, it was washed away by hurricane Irma.

This museum gives tribute to the underappreciated "Down-South Submarine."

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

These sprawling mines once served as a source of plaster and today serve as a storage facility.

An angular maze of concrete in Grand Rapids acts both as public art and as a staircase for fish traveling upstream.

World's largest Christmas store.

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.

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

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