This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

Elvis's own personal tropical hideaway.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

Not to be confused with the iconic New York City skyscraper, this Chicago building is a vibrant hub for artists.

A science teacher's dream.

This botanical garden outside Chicago boasts an array of more than 300 varieties of lilacs.

The site of a 19th century "dream city" that almost rivaled Chicago before being swallowed by the Indiana sand dunes.

This overgrown Illinois water park offers a whole new type of adventure.

Yes, this monument is aware that it is about 20 miles away from the actual center of the United States.

These pretty kitties killed and ate as many as 135 railway workers.

At Chicago's revered Field Museum, visitors are invited to learn about and literally explore DNA.

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.

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

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

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

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

The first artificial white water river course in North America cuts right through an Indiana city.

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

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

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

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