This spherical sculpture has also been dubbed "the steel orange" due to its likeness to a massive, sliced piece of citrus.

The medieval "Bearded Man" relief still serves as a clever flood warning marker.

Dedicated to the man who saved hundreds of children from Nazi-occupied Czechoslovakia.

A half-buried vehicle in Prague's is the latest iteration in a long-running piece by Czech artist David Černý.

The tunnel's elegant proportions keep you snug with no claustrophobia freak-out.

The largest and best-preserved rotunda in Prague.

A historic and beautiful Art Nouveau chamber in a historic railway station.

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

The world's largest second-hand graces a clock surrounded by constantly changing flower beds. 

The second-highest train station in Europe.

The bears of Bern have been a city highlight for over 500 years.

The memorial stands at the intersection of the rivers Morava and Danube.

Dedicated to a synagogue that was destroyed after having survived World War II.

A monument to the bloody fight against fascism in Slovakia during World War II.

The inverted pyramid design of this station stands out amid Bratislava's urban landscape.

Also known as the Blue Church, the building was consecrated to the daughter of Andrew II.

Many of the cottages and houses of this tiny village are adorned with a local lord's collection of saintly statues.

The world's first consecrated windmill.

The former "holiday home" for monks at the Durham Cathedral.

This cathedral's stained-glass patchwork of psychedelic colors and shapes was put in place long before the swinging 60s.

These engineering masterpieces are a dominant feature of the Belfast skyline.

The historic villages and towns of Suffolk are filled with wonky wooden beam houses painted an unusual shade of pink. Unknown to many though, this sweet shade has a bloody history.

This tidal island, a sacred site in early English Christianity, was the target of a notable Viking invasion.

A 150-year-old steam locomotive crosses the southern half of the island daily.