5 Days of Adventure: Wałbrzych, Poland
As a tourist, a trip to Wałbrzych would take you to a city rich in history and culture. You could visit the Książ Castle, one of the biggest castles in Europe, or the Wang Church, a stunning wooden structure built by Norwegian miners. You could also explore the "Underground City" of Osówka, a mysterious network of tunnels and buildings built by the Nazis during WWII.