This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

This automated sculpture of two men peeing will spell out text messages with their micturition.

An eerie, existential museum dedicated to the author of "The Metamorphosis."

This spooky statue sits outside a famous Prague theater.

What looks like a suicide in progress is actually a statue of Sigmund Freud.

Stripes of human ashes cover a back lawn in the most sought-after burial grounds in Paris.

Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

This cemetery features modernist statues as strange as its name.

An early 20th-century bullring converted into a modern shopping center.

An open-air "garden" of mural art that changes weekly.

The bizarre headgear looks like it was made for a fool, not a king.

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

In Rome’s Jewish ghetto, a 200-year-old bakery still makes the neighborhood’s historic sweets.

The "Great Sewer" of ancient Rome is one of the oldest sewer systems in the world, and is still in use.

This one-of-a-kind Roman arch is not actually dedicated to the god Janus.

In the early Roman Empire, people deemed traitors and criminals were tossed to their deaths from this rock.

The yawning maw of this pagan visage is said to bite off the hands of liars.

This ancient Roman prison is decorated with an upside-down cross not as blasphemy but as saintly tribute.

Legend has it that this bronze orb, which sat atop an ancient Egyptian obelisk, once held the ashes of Julius Caesar.

This subterranean shrine beneath a bike rental store celebrates the iconic Italian scooter.