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

This alley in downtown Chicago held the bodies of over 600 people after the fateful Iroquois Theatre fire.

The last remaining vestige of a popular 1999 public art display.

What may be America's largest classic video game arcade lurks inconspicuously in a Chicago suburb.

A section in the cemetery mostly for circus performers, including victims of the famous 1918 Hammond Circus train wreck.

In a cemetery full of holy men, mobsters, and haunted graves, among the most remarkable graves an ordinary husband and wife's spinning headstone.

Tour the luxe "glass cage" that inspired and unnerved the architecture world upon its debut.

Chicago’s incendiary role in the labor movement.

A 400-foot-tall tall map of Chicago makes this once-ignored building stand out.

This awkward aquarium sculpture is one of the strangest statues in Chicago.

Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.

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

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

A secret hatch containing two parchments was discovered in this statue over 40 years after its installation.

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

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

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

A journey begins with a single step, and for many, the road-trip of a lifetime started at this Chicago intersection.

The ruins of this temple were later chosen by Pope Celestine V to found an abbey and a hermitage.

A sculpture serving as an homage to Pope John Paul II.

Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.

The martyr's wax-enhanced skeletal remains lie preserved in a glass case in the Santa Maria della Vittoria in Rome.

A monumental fountain in Rome features a large statue of Moses that has been criticized for centuries.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.