You can spot this teeny tiny stained-glass window from the Bonifacius bridge.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

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

These plaques found across Warsaw commemorate the sites where executions or battles took place during the German occupation.

This colorful and quirky set of pegasus sculptures celebrate the works of poet Zbigniew Herbert.

This bell stars in a tragic love tale and is said to make wishes come true.

Legend says this is actually a heartbroken prince waiting for his true love's kiss.

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

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

Special benches that play Chopin's music are scattered throughout his native city.

The giant statue and its model solar system honor the native Pole who declared that the Earth revolves around the Sun.

The last king of Poland was interred in this church nearly 200 years after his death.

These 18th-century paintings of Warsaw were used to reconstruct the city after World War II.

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

A statue honors the children who fought Nazis in Poland.

The tiny, studious rodents greet visitors to the National Archives of Finland.

An abstract monument to a symphonic composer.

This irregularly shaped sea fortress has defended not one but three different sovereign states.

An alien church provides much needed silence in the midst of a Finland shopping center.

A subterranean house of worship carved right out of the bedrock.

The 19th-century home of Count and Countess von Hallwyl is now a museum.

A heated statue pays tribute to one of Sweden's great actresses.

This unique sculpture is often overlooked by pedestrians.

This small museum nestled inside a souvenir shop is dedicated to Sweden's most well-known toy.