A monument commemorating the 852 lives lost in the sinking of the MS Estonia.

An empty relic of the Moscow Olympics crumbles away in Estonia's capital.

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

A grumpy old water goblin guarding an old mill on the Devil’s Stream in Prague.

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

An eerie, existential museum dedicated to the author of "The Metamorphosis."

This Czech church doubles as something of a permanent fashion exhibition for a statue of the Infant Jesus.

Destruction from Armenia's 1988 earthquake inspired an artist's sculptures of scrap metal.

Unusual building appears to be haphazardly built from randomly piled bricks.

The cave holds a spectacular array of stalactites and stalagmites, including one shaped like a giant human heart.

This artificial cave looks like something out of a fairytale.

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

Throughout this shopping mall are medieval ruins that were discovered during the mall's construction.

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

A significant example of Czech cubist architecture—a style you won't find anywhere else in the world.

This automated sculpture of two men peeing will spell out text messages with their micturition.

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

The largest and best-preserved rotunda in Prague.

A stunning gilt bronze relief denounced by Hitler as "degenerate art"—even though it was dedicated to the Nazi leader.

Eight naturally mummified bodies in glass coffins are housed in an underground crypt.

A spitting ode to a German serial killer.

Giant wind turbine with observation deck at the very top.

The Suurhusen church tower in Germany leans over farther than the famous Leaning Tower of Pisa.

A decomissioned facility where the German "Transrapid" maglev trains were once tested.