Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

Italian poet Dante Alighieri is entombed in this small mausoleum in Ravenna, and his hometown of Florence has never been too happy about it.

This hidden art nouveau gem was designed by an architect in search of a national style.

Over the centuries, this island paradise has done it all, from providing monks with ecclesiastical respite to sheltering an exiled Leon Trotsky.

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

This conical hill was built as a testing ground for an engineer known as the Glider King.

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

A 16th-century Andalusian palace.

Legends of time travel and magical woodland creatures bolster the natural charm of this verdant sanctuary in the midst of Moscow.

What happens here stays here – unless it affects the whole world.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

A 1,000-year-old church holds the bones of the Christian martyrs who died hiding inside it.

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

On the outskirts of a reborn ghost town, a decaying post office remembers the bad old days.

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

One of the most powerful religious centers in the Middle Ages, dubbed the founder of Western monasticism.

This church sits upon a peaceful hill and a long, turbulent history.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

Beautiful views and Roman-style statues on the Italian coast.

An exquisite Baroque church in Vienna's old town.

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

A peculiarly shaped brass sculpture hidden in a courtyard in central Lviv

This well-preserved Cistercian Abbey in a romantic pastoral setting has inspired artists like the poet Wordsworth.

The small alleys in Lübeck's Old Town are a result of medieval urban sprawl.