A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

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

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

Looming communist pillar with a Czech twist.

Walk through Czech history in Prague's largest graveyard.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

Museum devoted to the artificial language of Esperanto.

The largest ice cave in the world is thought to be the entrance to hell according to Austrian legend.

Where beer lovers can literally immerse themselves in beer.

A historic observatory precariously perched at the "Top of Europe."

This medieval manuscript collection has some of the most obscure and ancient texts in the world.

This ancient monastery complex was transformed from an island to a peninsula when the lake was partially drained.

This architecturally eclectic fortress witnessed centuries of bloody turmoil, including the massacre of its ruling clan.

A cylinder monument with a spectacular vista commemorates a friendship that some say never existed.

Take respite inside this jaw-dropping church while climbing the volcano where Georgia's Prometheus was once chained.

Hidden up a dusty track off the Georgian Military Road is this fascinating waterfall with mountainous views.

Each year melting snow turns these Austrian hiking trails into scuba zones.

A collection of items from a way of life that no longer exists.

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

This retro, UFO-like structure is a remnant of the Soviet-era circus.

Lonely minaret stump of a destroyed city.

An outstanding piece of retro Sci-Fi architecture built into a sacred mountain.

One of the most ethnically diverse spots on the planet.