There are endless dark underground corridors below the 678 meter long building, and the gunpowder smoke is still dense. The powerful fortress building began in 1819 and was planned to be completed for 10 years, but it took 90 years. The colossal building that was built during the 19th century to serve as a spare capital for the nation in times of turmoil.
Here you can film:
Corridors in the dark, aisles, moat caponniere, dark vaults, twisting passageways, cannons, the vault of the National Bank, commander’s office, one of Europe’s largest built structures.