The castle still holds traces of the abandoned Roman fort it was built atop.

Stroll through Welsh history in a village of reconstructed structures.

This derelict superstructure was a very important warning system for the Soviet military.

Enthusiasts of the mid-20th century magician and comedian erected this statue in the small Welsh town in which he was born, even though the comedian only lived there for three years.

In a resort town where the real Alice spent her summer holidays, iconic characters create a curious trail.

The lighthouse is on a island which is connected to another island, which is connected to another island, which is connected to one of the largest islands in the world.

A little slice of Japan and its aesthetics in London's Holland Park.

A scattered trail of street art adds a pop of color to the city's stark structures.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

This disused Cold War bunker has been restored to all of its early 60s glory.

This Welsh village gave itself a ridiculous name in a publicity stunt a century ahead of its time.

A beautiful window with the old Tesla Radio company logo.

Straight out of a nightmare, barcode-faced babies climb up and down Prague's television tower.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

A series of playful yellow penguins share a serious message about the environment.

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

Street artists transformed an abandoned air vent into the beloved Star Wars robot.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

Looming communist pillar with a Czech twist.

One of the best-preserved Roman amphitheaters is still used today, but for less brutal events.

This underground tunnel system built during World War I offers a fascinating glimpse into Pula's military history.

This artificial cave looks like something out of a fairytale.

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.