This ferry carries passengers across the Rhine propelled by no engine or paddles but by the river's current.

This legendary giant, born from vegetables, terrorized townspeople and cheated local children in games.

A man throwing a giant severed hand towers over Antwerp’s main square.

This statue dedicated to the story of a Flemish boy and his dog was relatively obscure in Belgium, but a cult sensation in Japan.

An open-air sewer system that was covered piece-by-piece over 300 years.

Rare wooden escalators lead deep down into an otherwise staggeringly monotonous tiled tunnel.

A brush maker used his factory to protect blind Jews from the Gestapo.

The world's first clock to use set theory as a measure of time required the invention of a new light bulb just to maintain its obtuse measurements.

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

The 2,000-year-old beam is tucked within the pedestrian entrance to the old London Bridge.

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

Scattered throughout London are ancient remnants of the city's former bounding wall.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the first ‘Harry Potter’ film.

This celebration of Latvia’s freedom and independence avoided demolition over half a century of Soviet occupation.

This statue is dedicated to the animal cosmonauts that perished during space flight experiments.

A stone marker and sculpture in the city of Riga stake a claim for the very first community Christmas tree.

The reconstruction of this prominent building fulfilled a long-written command.

3,000 market stands in five former Zeppelin hangars.

Latvia's symbolic mountain-shaped national library is home to millions of cultural tomes.

A black cat protests the City Guild in Riga's Old Town.

This museum is dedicated to the most famous Irish writers in history.

A statue in the center of Dublin dedicated to one of their favorite sons of rock & roll.

An angelic, yet demonic-looking figurine presides over one of Glasgow's most ancient streets.