St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

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

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

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

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

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

A statue honors the children who fought Nazis in Poland.

A 20th-century picture show in 3-D.

After the famous composer died in Paris, his sister snuck his heart out of the country to honor his wish that it be buried in their native country.

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

In the days before house numbers, these colorful signs held clues about various buildings' purposes.

The largest collection of handbags in the world, the oldest of which were used to carry Bibles, primarily by men.

This unattributed sculpture in Amsterdam is hiding in plain sight.

One of a series of no-purpose kinetic artworks by Swiss sculptor Jean Tinguely.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

The Habsburgs' royal collections of art and wonders.

Baroque celebration of the end of the Great Plague of Vienna.

Op-art architecture designed for happiness.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

This Austrian museum celebrates the work of famous forgers and their inimitable imitations.

The final resting place for the remains of 143 Habsburg royalty.

This gorgeous space is England's largest independent library outside of London.