Largest island in the Baltic Sea experiences such idyllic weather that roses bloom in the middle of December.

A floating underwater hotel, created by a Swedish artist.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

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

It houses the remains of a 17th-century version of the Titanic.

An apparition of Virgin Mary in Herzegovina.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

A musical instrument played by the sea.

Oriental bazaar in the heart of Sarajevo.

3,000 market stands in five former Zeppelin hangars.

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

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.

Flamboyant architecture from the turn of 20th century.