This simple apartment may have inspired some of the most important theories in the history of science.

Swiss vineyards in a UNESCO heritage site.

One hundred years ago this small house in downtown Zürich became the birthplace of the Dada movement.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

This is not only one of the oldest collections in Europe, but also possibly the most beautiful.

An intricate and amazing house built by architect Karl Junker.

Skeletons dressed in extravagant 18th century royal costumes cavort in the aisles of this German basilica.

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

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

This impressive collection of rare books on ancient mysticism inspired author Dan Brown.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

The most visited, and possibly most controversial, museum in Germany.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

A little slice of Japan and its aesthetics in London's Holland Park.

A cluttered and astounding collection of antiquities and curiosities.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

Built to repay the sins of the father, this church is home to one of the most valuable works of Western art.

The world's oldest surviving anatomical theater, where "the dead are pleased to help the living."

Deceased nuns were placed on stone chairs to decompose, while the surviving nuns prayed near the lifeless bodies.

A succession of eerily contemplative iron figures lead from a Scottish museum to the sea.