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

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

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

Inside this Krakow church, an explosion of psychedelic color.

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

In the summer, the area around this sculpture transforms into a vibrant concert venue.

This grubby wall is said to be one of the Earth's esoteric energy centers.

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.

Once a giant gingerbread factory, this space now hosts exhibits and workshops on the historic treat.

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

This fairytale medieval church in Poland originally spent centuries in Norway.

Museum dedicated to "the man who moved the Earth."

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

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

This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.

An early 20th-century bullring converted into a modern shopping center.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.

There has been an astronomical clock on this spot since the 14th century.

This ancient ruined monastery has been destroyed by fire so many times that it seems like God hates it.