German and American troops joined forces to defend this fortress during the strangest battle of World War II.

Be(w)ar(e) the moat around this historic Czech castle.

Macabre astrological automaton clock dating to the late 1400s.

A saintly relic hidden in a Prague church basement.

This noble mash-up in eastern Luxembourg is part Medieval, part Renaissance, all castle.

This Luxembourg cave is covered in cryptic looking marks left by mining activity.

The last bastion of Roman presence north of the Alps looms over a German town.

The birthplace of Karl Marx is now a museum dedicated to the communist revolutionary's life and work.

A Gothic cathedral created from volcanic rocks.

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

A daring D-Day assault by U.S. Army Rangers is commemorated atop the high cliffs of this strategic point.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.

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

Go inside a revolutionary, cage-less zoo where 35 species live and some of them roam free alongside their human visitors.

Steadily reminding Czechia of its past.

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

The 1936 Summer Olympics site is a crumbling remnant of sportsmanship and a history its host country would like to forget.

The site of a concentration camp where inmates were made to take part in one of the largest counterfeiting operations in history is now hauntingly empty.

A restaurant and observation deck built in a unique broadcasting antenna.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.

The struggle of a small Dutch island against the sea.

The tallest waterfall in the Netherlands is a lovely, stepped feature that is only 50 feet tall.

This disused VLF radio station is no longer in service but the surrounding town still bears its name.