07.07.2026 • 48 Min.

Did you know a single salt mine once funded one-third of an entire kingdom? Today we're exploring the Wieliczka and Bochnia Royal Salt Mines in Poland. In this episode of World Heritage Rookies, Lina takes us deep underground into one of the very first UNESCO World Heritage Sites ever designated. From boiling prehistoric brine to the creation of giant hidden chambers, we uncover how these mines became the economic backbone of the Polish crown. Discover how salt built Krakow's famous castles, why King Casimir the Great championed the miners, and what you need to know to explore these incredible subterranean worlds yourself.