These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

A beautiful maze marks where three countries meet.

This futuristic German television spire is actually the world's largest digital clock.

Once the fallout shelter of a dictator, this sprawling bunker is now a combined history museum and contemporary art gallery.

In the heart of Tirana, this underground nuclear bunker has been transformed into a museum.

What happens when you cross a mayor and a painter?

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

A memorial to the atrocities of the People's Socialist Republic of Albania.

One of the best examples of a Byzantine period monument in Albania.

The largest Roman amphitheater in the Balkans once held over 20,000 people, but managed to lay hidden for hundreds of years.

Named for its similarity to the tip of a violin's bow, this striking formation was created by millions of years of erosion.

A reminder of the gruesome punishments delivered to those who were found guilty during Scotland's witchcraft trials.

This lovely Scottish nature walk leads to the source of a local legend.

This site contains overlapping ancient graveyards that existed about 1,000 years apart.

The castle that provided the setting for much of 'Monty Python and the Holy Grail' is now a pilgrimage site for fans.

The Siege of Naarden ended in 1814, but the cannonballs embedded in the town church remain.

Located inside Hoge Veluwe National Park, this museum began as the private collection of a prominent female art collector.

Hidden in plain sight on a gable between two towers on the roof of shipping firm F. Laeisz' headquarter in Hamburg sits an unexpected bronze sculpture.

Tiny memorials honor individual victims of the Holocaust.

Dedicated to the European Sinti and Roma peoples murdered during the Holocaust.

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

This red light district plaza memorializes the Fab Four and their historic connection to the area.

Residing along a busy thoroughfare, this sculpture urges passersby to consider the future.

Largest illuminated advertisement sign in the world.