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

These mechanical goats first battled it out in the year 1551, all because of an overcooked deer.

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

A striking public sculpture representing the period of martial law in Communist Poland.

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

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

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

Poland's oldest surviving university building holds a wealth of historic science instruments including some used by Copernicus.

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

Real bones which are said to have belonged to a Polish dragon.

Beneath Kraków Old Town's main square lies a hologram-filled medieval market vampire graveyard wonderland.

An underground city of salt.

Ugly 18th-century dwarf statues living in a perfectly landscaped Austrian garden.

The beautiful, ornate weather station is the most popular geocache in Salzburg.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

This 19th century cyclorama acts like an analogue time machine to a different era.

This series of underground chambers contains Europe's largest subterranean lake that is slowly drained each day.

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.

A whimsical bridge adorned with decorative dragons.

This one-time health resort was used by aristocrats around the world.

This Transylvanian church has changed its denomination four times.

Nine centuries-old fortresses guard the walls of this medieval Romanian city.