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

The Vatican's secret porn-festooned bathroom was painted in erotic murals by one of the greatest artists of the Renaissance.

This recently restored crypt was once plagued by liquefying coffins and exploding caskets.

Meet the bronze beloved pet to a family of famous peeing statues.

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

Climb inside an iron crystal magnified 165 billion times its normal size.

From Tintin to the Smurfs, Europe's greatest graphic icons are celebrated in a grand Art Noveau gallery.

CERN's beautiful, bending sculpture is a tribute to the spread of knowledge.

Large Hadron Collider and the Birthplace of World Wide Web.

Natural history museum displaying a famous taxidermied St. Bernard.

Traversing steep Alpine slopes, this engineering marvel is one of the longest and highest funiculars in the world.

A cablecar-station-turned-revolving restaurant with 360-degree views of the Swiss skyline.

A historic observatory precariously perched at the "Top of Europe."

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

A museum filled with tiny, adorable versions of the mighty Royal Danish Navy.

This ordinary street was made infamous by a legendary visit from the devil.

A novel collection of medical curiosities housed in an 18th-century surgeon training academy.

The gilded, masterful astronomical clock will calculate time, dates, and planetary positions for thousands of years to come.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

Beneath Denmark's Højbro bridge, a bronze merman and his seven sons forever mourn for the mother and wife who left them for land.

Opulence and fantasy collide in this royal chair which is supposedly made with unicorn horns.

This sublime architectural marvel is a rare example of an expressionist church.

Hans Christian Andersen for the postmodern world.