A wide array of locomotives call this outdoor museum home.

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

The Frank Zappa fan club erected this monument to their prog-rock hero to mark a new era of post-Soviet Lithuania.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

This biographical museum honors the groundbreaking scientist at her birthplace in Warsaw.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

Catch a scenic view of Warsaw's Old Town from the top of a centuries-old dumping ground.

A menacing statue of this mythical creature can be seen at the legendary site of the monster's lair.

The world’s narrowest house makes for an awkward, four-foot-wide living space.

This hidden collection of everyday objects illustrates life within communist Poland.

This enormous 32-foot painting depicts Poland's greatest medieval battle in glorious detail.

An artificial date palm stands as a memorial to Warsaw's Jewish community.

Walk along the medieval fortifications that have been protecting Tallinn since the 14th century.

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

A former imperial sea-fortress and Soviet prison.

Disused seaplane hangar gets a second life as the jaw-dropping home of Estonia's museum of maritime history.

Legend has it that not even Stalin could pull down the 2015 European Tree of the Year.

Mysterious craters may have been home to an ancient cult.

The first designer power line in Estonia.

This 16th-century cemetery became a recreational park during the Soviet occupation—today it's a little bit of both.

A unique sculpture calls the outside of this steakhouse home.

Estonia's largest creative city is a vibrant bohemian hub located within a former industrial complex.

An underground city of salt.

Inside this Krakow church, an explosion of psychedelic color.