This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

This massive library holds what was once the largest book collection in the world.

France's most famous cemetery, with some of its most curious tombs.

Take respite inside this jaw-dropping church while climbing the volcano where Georgia's Prometheus was once chained.

One of the world's oldest fossil exhibits is on display in a beautiful antique "naturalienkabinett."

The zoological collection at the Hessisches Landesmuseum hosts some of the world's oldest habitat dioramas.

This 18th-century folly is one of Europe's rare "garden mosques."

This outdoor library provides around-the-clock access to around 7,000 books.

One of the oldest wine cellars in Germany is now a restaurant beneath Bremen's town hall.

Walk inside a half mile long crevice right outside the town of Garmisch Partenkirchen.

A Saxony castle houses one of the largest and most outstanding mineral collections in the world.

This small Bavarian graveyard is filled with empty graves for German soldiers lost during the World Wars.

One of the most well-known city festivals in the world.

Berliners converted a bombed-out, disused lot into a community-run urban farm with its own cafe and bar.

The castle where Martin Luther secretly translated the New Testament from Greek to German while in hiding.

An ancient pagan site swirling with legends in the foothills of Franconian Switzerland.

The world's biggest pet store.

A tiny chapel clings to a precipice above Germany’s gemstone capital.

The medieval institution is home to the precious treasure stolen in World War II in one of the greatest art thefts of the 20th century.

King Ludwig I's collection of beautiful women.

This 8th-century Bavarian monastery is home to an exquisite Baroque-era library.

A meteorite-bounded town in Bavaria.

Model Trains and Much More in Hamburg.

This Rococo church is known as the most beautiful village church in the world, and does not disappoint.