When the rain falls, this drain system turns into a musical instrument.

Model Trains and Much More in Hamburg.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

This magnificent museum claims to house the cranium of a disciple and the skull of a pope.

A monument to the thousands of Canadian soldiers who died capturing the French ridge during World War I.

An underground city of ancient quarry tunnels hid thousands of Allied soldiers in WWI.

Remains of the artificial harbours invented for the Allied invasion of Normandy can still be seen at sea.

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

Bordered by forest on three sides and the ocean on the other, the Great Dune of Pilat is the highest sand dune in Europe.

The world's largest reflecting pool is just two centimeters deep.

Museum on earth sciences featuring a recreation of a famous curiosity cabinet.

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

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Copenhagen's celebrated theme park and gardens.

A surreal statue honoring Prague's favorite literary son.

Looming communist pillar with a Czech twist.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Macabre astrological automaton clock dating to the late 1400s.

In the shadow of a former battleground, the resting place for nearly 2,000 soldiers who died in World War I.

A moving memorial to the fallen and missing from WWI trenches.

The site where one of the most famous poems of World War I was composed is preserved to honor the legacy of the work.

A rare example of World War I trenches from the British front.

A little sculpture with a large wardrobe.