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

A shining sculpture made of 3,115 lights, the number of visible stars in the Northern Hemisphere.

This column celebrates Rome's victory over the Goths, and may be the oldest Roman monument in Istanbul.

An antiquated German apothecary on Chicago's North Side.

These mansions date back to Chicago's days as a brewer's paradise.

Where Cusack's record store from the film "High Fidelity" was located.

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

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

Once at the center of U.S. finance, the historic Trading Room was meticulously recreated piece by piece and rebuilt in the Art Institute.

A century-old hotspot for jazz, frequented by everyone from Charlie Chaplin to Al Capone.

One-of-a-kind preserved ruins of an abandoned 1880s church in Chicago's Pilsen neighborhood.

To find the "unicorns of the deep" you've got to go downstairs.

The rodent-shaped sidewalk imprint that earned worldwide media attention.

In 2004, a Dave Matthews Band tour bus dumped 800 pounds of waste off a bridge and onto an unsuspecting tour boat below.

The last masonry skyscraper ever built reveals a transitional moment in architectural history.

This gallery is home to everything from antiques, to ancient tribal masks.

A recreation of an Old West apothecary full of curios.

This spectacular track has run continuously since 1882.

A beautiful combination of living flora with preserved bones covers the shelves of this shop.

A Rocky Mountain city provides a happy ending for a pinto pony and his Brobdingnagian red chair.

A small store filled with animal skulls and other curiosities.

This dynamic entertainment venue brings a much-needed funkiness to the region with its bizarre art, eclectic films screenings, and peculiar performance pieces.

In the 1950s, two women saved this grand theater in the Colorado mountains from demolition.

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.