Iceland's "Smoky Valley" is a beautiful river that is shrouded in a constant cover of steam clouds.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

A museum dedicated to a Cold War era sausage.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

One of the most well-preserved castles in Italy also contains a rare medieval example of a port fortification.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

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

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

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

The most visited, and possibly most controversial, museum in Germany.

The fairy tale castle of the "fairy-tale king."

An exhibition of preserved locomotives housed in a 1950s depot shows the history of Denmark's railway.

A once-thriving hotel in the Swiss Alps couldn't compete with climate change.

Human ancestor’s 3.6 million year-old footprints.

Beneath Denmark's Højbro bridge, a bronze merman and his seven sons forever mourn for the mother and wife who left them for land.

Copenhagen's celebrated theme park and gardens.

A collection of noses tucked inside an art museum reveals how times have changed.

The gilded, masterful astronomical clock will calculate time, dates, and planetary positions for thousands of years to come.

Giant topiary dog once played a role in a terrorist bomb plot.