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

Latvia's symbolic mountain-shaped national library is home to millions of cultural tomes.

The oldest housing complex in Riga is a mini timeline of architectural trends.

A black cat protests the City Guild in Riga's Old Town.

Flamboyant architecture from the turn of 20th century.

3,000 market stands in five former Zeppelin hangars.

Legend has it that Napoleon Bonaparte fell in love with this Gothic church.

Travelers who fall victim to this mermaid's charms are destined to stay in Užupis forever.

This micro-nation may be some sort of prank, but its constitution sure seems official.

Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.

Antique cinematography artifacts fill this museum dedicated to the inventors of the moving picture.

Lyon's miniature version of the Eiffel Tower was built as a statement in support of French secularism.

Two stone columns flank the grand Venice square, but there were supposed to be three.

Go inside to really appreciate this 500-year-old technological masterpiece.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

This cemetery features modernist statues as strange as its name.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Monumental sculptures guard many of the graves, transforming this necropolis into an open-air fine art museum.

This Ukraine alleyway has become its own little island of forgotten things.

The deepest metro station in the world.

340-foot statue built to honour the Heroes of the Soviet Union.