Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

Spinning silently in the lobby of an Art Deco masterwork is a massive vintage model of the Earth.

A bit of retro transportation flair preserved in the world's largest department store.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

A plaque marks a former safe house on the secret route, now hidden next to a McDonald's.

Chicago’s incendiary role in the labor movement.

The clothes-washing king doubles as a community center with some unusual features, including an aviary filled with finches.

Half-sized replica of the Leaning Tower of Pisa built to honor Galileo.

The famous author's birthplace is preserved in a town that he once described as narrow-minded.

Pizza with a side of fine art.

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

Chicago's North Park Village was once the largest municipal sanatorium in the country.

A gothic church spire sits atop this skyscraper, the tallest church in the world.

Chicago's largest cemetery is full of beautiful Victorian monuments and more than a few ghost stories.

A lush green oasis in the middle of Chicago.

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

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

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

An antiquated German apothecary on Chicago's North Side.

A monument to the art of slicing people open.

All of Chicago's wood-paved streets are long gone but two alleys remain.

A strange and haunting monument of unknown origin in the historic Graceland Cemetery.

An enormous park-like oasis, full of famous Chicagoans' graves.

The world's only known button museum.