While many places make the claim, the Library of Congress says this restaurant is the birthplace of the hamburger.

The intriguing personal collection of a professional demon-chaser.

Yale University's home for rare works, including the mysterious Voynich Manuscript.

A religious-themed park filled with folk art to bring biblical stories to life that fell into disrepair and now being restored.

You can take a class, browse the library, or visit the lavish lair of an international men's humor society.

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

This surprising gem is a world-class archeological museum hidden at the University of Chicago.

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

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

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.

Shop of curiosities with a dinosaur museum tucked in its basement.

An antiquated German apothecary on Chicago's North Side.

A lush green oasis in the middle of Chicago.

This shop for all your super spy needs hides an educational secret.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

Memorial of the Salem witchcraft hysteria in the town of Danvers, where it all began.

Enjoy an overnight at an old haunted B&B site of the Borden family murders.

Two thousand artifacts from around the world collected by one woman who loved to travel.

This Boston medical museum features the skull of the famous medical case of Phineas Gage.

An enormous, inside-out glass globe built in 1935.

Lions and tigers and leopards, servals, pumas, bobcats, lynxes, and ocelots... oh my!

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

A rare particle accelerator with a tremendous energy range is tucked away at Ohio University.