Travelers are voting Biskupin, Ruins to the bunker of Capt. Raginis- Strękowa Mountain and Bastion No 7 as the best of 19 ruins in Poland. Also popular are Bunkers of the Soviet fortifications and Strekowa Mountain - Polish Thermopylae in Podlaskie and Borough in Grzybowo in Warmińsko-Mazurskie. Want more? Check out our map of ruins in Poland or this 1 ruins in Krakow.