Category presenting defensive fortifications, fortifications, forts, fortifications and other defensive buildings mainly from previous eras.
Coastline
Kuyavia
Warmia-Masuria
Upper Silesia
Lesser Poland
Lublin region
Coastline
Sudetes
Lublin region
Coastline
Lower Silesia
Pomerania
Pomerania
Lublin region
Subcarpathian
Warmia-Masuria
Upper Silesia
Upper Silesia
Kashubia
Warmia-Masuria
Sudetes
Biebrza Valley
Upper Silesia
Lublin region
Upper Silesia
Lake District Chełmińsko-Dobrzyńskie
Coastline
Coastline