This fantastic cave remained unexplored until 1948 when three schoolboys discovered a hidden entrance.

3,000 market stands in five former Zeppelin hangars.

The widest waterfall in Europe is a natural wonder and one of the only places where fish are caught in the air.

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

Rent a barrel for a personal view of where the Baltic Sea meets the Gulf of Riga.

This abandoned beacon is moving closer and closer to the sea.

A railway bridge leading nowhere stands lonely in the middle of a meadow.

A creepy statue of a hooded ghost hauls itself up from the water in a historic Lithuanian city.

Lithuania's outdoor sculpture trail of wooden folk art.

A narrow strip of land is home to the tallest migrating dunes in Europe.

Launch site for nuclear war against Western Europe.

A tiny traditional village keeps an ancient method of beekeeping alive.

Open-air museum with a large collection of Soviet-era statues.

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.

This charming Latvian lane doubled as Baker Street on the Soviet Union’s version of Sherlock Holmes.

A stone marker and sculpture in the city of Riga stake a claim for the very first community Christmas tree.

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

A 15-foot-tall statue of the head of the Sopranos family greets passengers at a train station in southeastern Lithuania.

A 300-kilogram egg sculpture that embodied a neighborhood revival.

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

While this monument tile is shrouded in mystery it also marks the end of the longest ever human chain.

An abandoned masterpiece of Soviet Brutalist architecture.

This former KGB building is now a museum memorializing the people who suffered during the Soviet regime.