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

Mysterious craters may have been home to an ancient cult.

This abandoned secret city is a crumbling wonderland of Soviet ruins.

The Latvian city of Ventspils is filled with dozens of cow statues showcasing unique themes.

This celebration of Latvia’s freedom and independence avoided demolition over half a century of Soviet occupation.

The reconstruction of this prominent building fulfilled a long-written command.

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

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

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

3,000 market stands in five former Zeppelin hangars.

Flamboyant architecture from the turn of 20th century.

This small town's local tradition is to create the world's tallest ice pillar.

Not quite the cultural gateway between China and Sweden its designer imagined.

The remnants of a record-setting industrial bucket system can still be found dotting the Swedish countryside.

The oldest Swedish built lighthouse still guides ships through the archipelago.

A southern Swedish island is home to the last ERSTA artillery battery, meant to protect the shoreline during the Cold War.

A tiny town hall—in Sweden's one-time capital—might be the smallest in Europe.

Sweden's oldest street has not changed for nearly a millennium.

Frequent fliers welcome in this airplane hotel.

The single richest source of elemental discoveries in the world.

An entire shopping mall and industrial terrain named for the time the king of Sweden's car went into a ditch.

This Stockholm art museum integrates many of its pieces into the surrounding outdoor areas and natural landscape.

Once the world's most modern observatory, this building is now a private school.

Sweden's "good old days" painstakingly re-created in a model village.