A striking symbol of the Bulgarian capital.

Sofia's legislative center is continuously reinventing itself.

"Holy Wisdom" overlooks the city that became its namesake.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

The design of this beautifully crafted building was inspired by Norwegian glaciers.

This chimerical bridge/tunnel appears to dead end right into the sea.

A 19th-century subterranean reservoir repurposed as a contemporary art cave.

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

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

Climb to the top of its spiral spire for spectacular views of Copenhagen.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Copenhagen's celebrated theme park and gardens.

Two stunning 17th-century libraries and a cabinet of curiosities.

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

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

Macabre astrological automaton clock dating to the late 1400s.

This spooky statue sits outside a famous Prague theater.

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

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

Looming communist pillar with a Czech twist.

Monument to a suicide protesting the Soviet invasion.