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.

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

Ruins of an aerial tramway that ran for only eight years.

World's largest barrel containing an inn.

This statue has a painful history, but activists have since recontextualized it as a way to educate visitors about the dangers posed by fascist regimes.

This giant statue of a vulva became internationally famous after an American exchange student got stuck in it.

A striking 12th-century-style castle built on the edge of a cliff.

The narrowest street in the world is in danger of closing up entirely.

Switzerland's oldest public observatory is an important part of the Zurich cityscape.

A 700-year-old drinking fountain turned charity for the less fortunate of Zurich.

Underneath the well-known Lindenhof hides a secret cellar documenting Zurich's early history.

A 13th-century Swiss castle houses a collection of artifacts from the Polish diaspora.

Lucerne's central prison was converted into a tourist hotel with a bare minimum of changes.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

Enter the cabin of a life-sized Hindenburg replica.

The prototype for all Nazi concentration camps.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

A beloved street vendor is memorialized outside a German train station.

A comedic homage to a beloved German actor.

One of the oldest student jails in Germany.

The Goose Girl of Göttingen, Germany might well be the most kissed girl in the world.

A 1:2 billion-scale solar system leads visitors into this German university town.

A Nazi concentration camp and Anne Frank's place of death.

A set of beech hedges planted in the 19th century forms a tunnel that takes on a different appearance in every season.