A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

The second-largest gold nugget in existence, displayed in a Las Vegas casino conveniently named the Golden Nugget.

This architectural stunner is one of the few surviving Egyptian Revival theaters in the U.S.

A small abandoned and abused cemetery that has become a magnet for ghost hunters.

This old steel industry company town has a tradition of parking cars on the sidewalk so people can walk in the narrow streets.

The sign to a demolished amusement park now stands in front of a local library.

This urban drawbridge gained eternal pop culture fame when the Blues Brothers jumped it while it was raised.

The young Black revolutionary was killed before getting to see a non-segregated pool in his hometown.

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.

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

This modest post office sits on the site of H.H. Holmes' famous murder castle.

A hollow cement depiction of time's inexorable effect on the human body.

What was once one of the country's largest confectionary plants is now an abandoned ruin, but is still pretty sweet.

A haunting statue called "Eternal Silence" has quite the reputation among visitors with active imaginations.

The original Garfield station is the oldest station facility on the "L", with the station house dating from 1892.

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

Hot Doug's "Hot Dog" Stand.

One of the few remaining relics of the meatpacking hub that made Chicago the "hog butcher to the world."

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

These abandoned grain silos and tunnels are an urban exploration dream.

Huge abstract sculptures of the Puerto Rican Flag.

These chunky stone towers out in Lake Michigan are the key to Chicago’s drinking water.

Former bath house turns gastropub.