A church filled with the bones of hundreds of virgins martyrs—or so they say.

The bones of the Biblical Magi traveled to Constantinople and Milan before landing in their current home inside an elaborate golden reliquary in the Cologne Cathedral.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

This 19th-century fountain features sculptures of little gnomes that help with chores.

The largest bell in the world has been swinging high above a Cologne cathedral for almost a century.

Centuries of warfare, tragedy, executions, and poetry come together in this 13th-century fortress.

Legendary site where an evil bishop was devoured by rodents.

A memorial for a young woman and her ghost, which are claimed to have caused countless deathly shipwrecks.

While you wait to cross the street at a traffic light in Mainz, you might notice that the light is staring back at you.

Tiny castle in the middle of the Rhine made you pay to pass.

This fountain of a little boy that spits on passersby at erratic intervals is a town icon.

Every half hour the eye-rolling clock face sticks out its tongue to mock the good citizens of Koblenz.

A remnant of the Franco-Prussian War, lodged in the city's walls.

Visitors dating back to the 1600s carved their marks in the stones of the iconic tower.

A pink sandstone column once used in ancient times to measure one's belly after a night of debauchery.

There has been an astronomical clock on this spot since the 14th century.

Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.

These ornate arches show how the course of the River Thames has changed.

England's most famous front door has an accidental doppelganger.

Museum dedicated to the UK's first charity for abandoned children, with keepsakes of the mothers who left them behind.

The lab where the scientist made his groundbreaking discoveries is preserved on the basement floor of the Faraday Museum.

These former ticket office windows in London's underground now house pocket-size parks.

Tony Blair's garden gnome and a Howitzer shell-turned-flower-pot are on display in this deconsecrated 13th-century church.

Named for a doctor who made a breakthrough in London’s cholera epidemic, this 1800s pub was also the site of a queer “kiss-in.”