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

Mysterious craters may have been home to an ancient cult.

An eerie, derelict amusement park in Berlin.

A floating cat sanctuary on an Amsterdam canal.

A striking public sculpture representing the period of martial law in Communist Poland.

The 20-mile causeway that separates the Netherlands from the sea.

This historical Netherlands fortress still bears the marks of its single siege.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

Copenhagen's celebrated theme park and gardens.

Twisted buildings adorn the banks of the Rhine river.

This futuristic German television spire is actually the world's largest digital clock.

The largest bell in the world has been swinging high above a Cologne cathedral for almost a century.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

Thousands of flowers create enchanting pink tunnels over the city streets.

Be(w)ar(e) the moat around this historic Czech castle.

Tiny castle in the middle of the Rhine made you pay to pass.

Legendary site where an evil bishop was devoured by rodents.

This fountain of a little boy that spits on passersby at erratic intervals is a town icon.

The silly symbol for an underground protest group is now scattered around the city.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

Looming communist pillar with a Czech twist.

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

A mocking tribute to the past and modern leadership of Prague.

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