This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

Climb right into the heart of this colorful Iceland volcano.

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

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

A stratovolcano located in the south of Iceland, with a long history of charted activity and a rich mythology attached.

This wrecked airplane has been sitting on a black sand beach since the 1970s.

The "Prussian Versailles" that is as glorious today as when it was built.

An elevator into the Baltic Sea.

The housing complex served as an anti-fascist fortress during the Austrian Civil War.

The world’s oldest military museum has remained largely unchanged since the last days of the Austro-Hungarian Empire.

A long spiraling walkway winds through the woods, and around a copper beech tree at the center.

Hamburgers are intensely proud of their tunnel beneath the river.

A wunderkammer of exoticism immortalized by Tom Waits.

Model Trains and Much More in Hamburg.

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

This dazzling Buddhist temple was constructed from over one million ceramic tiles salvaged from a British shipwreck.

Meant to be a lavish presidential home, the palace became a symbol of the fall of South Vietnam.

Artifacts and memories from the Vietnam war, located in a place that experienced it first hand.

This French colonial post office is arguably the grandest in all of Southeast Asia.

A socialist building dedicated to teachers showcases one of the largest Soviet mosaics in the world.

The best bagels in Berlin are tucked away in an independent bookstore.

A small hippo-shaped fountain in Berlin, Germany.

An architectural oddity hides in plain sight on this iconic London bridge.

Pre-Nazi swastikas adorn the sculpted pachyderms flanking this brewhouse portal.