This former Nazi labor camp is now a poignant memorial, complete with giant Soviet-style monuments.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.

A former Latvian headquarters of the brutal KGB secret police is now open as a grim reminder of their atrocities.

This enigmatic artifact remained buried in a churchyard for years.

A small museum contains one of the largest collections of ethnic and traditional headgear in the world.

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

Medical museum that houses most notably the taxidermied remains of Vladimir Demikhov's famous two-headed dog experiment.

A vast and unlikely aviation museum kept alive for over 50 years due to one man's tenacity.

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

3,000 market stands in five former Zeppelin hangars.

The statue of a legendary giant who carried Christ and shouldered the world's sins.

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

Flamboyant architecture from the turn of 20th century.

A preserved oak tree about 3,500 years old found in Riga, Latvia.

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

The bust of Romania’s most notorious ruler, Vlad Dracula aka "Vlad the Impaler," keeps watch over the ruins of his medieval court.

Romania's triumphal arch looks out over Bucharest.

This snug medieval lane is one of the narrowest streets in the world.

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

Something's watching you.

Climbing to the top of the cathedral's bell tower offers sweeping views of these medieval ruins.

The ancient Greek Titan guards this massive dam holding a lightning bolt to symbolize electricity.

The legendary cliffside castle of three-time Voivode of Wallachia, Vlad the Impaler.