Fort Beniaminów

Fort Beniaminów is a military fortification in Beniaminów that features concrete barracks with semi-circular vaulted halls arranged in a defensive perimeter. The fort is surrounded by deep dry moats and includes underground passageways that connected different sections of the structure.

The fort was constructed in 1904 as part of Warsaw's outer defensive ring to protect the city from external threats. Construction stopped in 1913 when Russian authorities disbanded the Warsaw Fortress system.

During World War I, the fort served as a military prison for Polish Legion soldiers during the political controversy known as the Oath Crisis.

The fort sits roughly 20 kilometers east of Warsaw and is partially open to visitors, though some sections remain in military or residential use. Wear sturdy footwear since paths can be uneven and damp from the surrounding moats.

The fort features observation towers positioned on its shoulders that oversee an extensive network of underground tunnels. This hidden infrastructure reveals the strategic thinking of the military engineers who designed it.