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

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

If you look closely at the oldest bridge in Paris, you might notice hundreds of ugly faces leering from its sides.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

According to tradition this is the oldest church in Venice, but its actual age is a mystery.

Drink wine handed out through a window as part of an age-old tradition.

Time has been frozen at this station since the bombing in 1980—or so it was believed.

The best place in the world to buy tinned fish.

Statue dedicated to the star of an old television show.

A giant, Gilded Age mansion that once belonged to the beer baron of Milwaukee.

A place to eat for on-the-run agents and espionage enthusiasts.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.

Hidden on the 7th floor of a historic building, this Cajun spot features wall-to-wall bottles of hot sauce.

This spectacular public market has got meat, fish, vegetables, baked goods, and enough kielbasa for a lifetime.

The home made famous by the 1983 holiday classic is now a perfectly preserved shrine to the movie.

The angel of death appears to weep black tears at this grave marker.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

A museum devoted entirely to the rattlesnakes and snake-related art.

Love, knishes, and best wishes from this legendary Lower East Side bakery.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

Legend tells how a Spanish soldier disappeared from this isolated sentry box without a trace.