In the loving memory of a tragically deceased role-player this Illinois park is decked out with both dungeons and dragons.

Arguably the best example of an authentic Dutch windmill in the United States, rivaling its counterparts in the Netherlands.

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

World's second largest particle accelerator, where nature reveals its secrets.

The final resting place of up to 6,000 Confederate soldiers, the largest mass grave in the Western Hemisphere.

A notorious Route 66 eatery once frequented by Al Capone.

Home to a protest movement, a bombing, and a dramatic change in labor history.

Taxidermy, Cigar Store Indians, A Model of a New York Tenement and Delicious Draft Root Beer.

When you visit his grave, be sure to rub the Great Emancipator's nose for good luck.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

First planned industrial community in the United States.

This elaborate Hindu temple is located in a Chicago suburb, but looks like it was transported directly from India.

A hot dog stand where the heads are just as hot as the dogs.

River pirates, murderous bandits, and serial killers used this Illinois cave as their debauched hideout.

An extensive collection of fine art devoted to man's best friend.

A floating museum that was sunk by a flood and left to rot in the tides.

One of the world's earliest skyscrapers.

This mansion was made famous by its colorful cast of owners and location along the Sante Fe Trail.

This Kansas City studio was home to Walt Disney's first animation business.

One man's unrequited love stands in a glass box forever.

The only remaining Cold War–era Minuteman II missile control center in Missouri.

The first car-centric shopping plaza in the U.S. brought a little bit of Spain to downtown Kansas City.

One of few surviving standpipe water towers in the U.S.

A beloved, quirky little fountain featuring a large frog spitting water at a naked boy.