Hlučín-Darkovičky Czechoslovak Fortification Complex
The Hlučín-Darkovičky Czechoslovak Fortification Complex (Czech: Areál československého opevnění Hlučín-Darkovičky) is an exhibition of 1930's military fortifications in Hlučín-Darkovičky, Czech Republic. The forts MO S-18 "Obora", MO S-19 "Alej" and MO S-20 "Orel" are parts of the exhibition.
Source: Wikipedia — Hlučín-Darkovičky Czechoslovak Fortification Complex (CC BY-SA 4.0)