IV Fort, Military fortification in Kaunas, Lithuania
IV Fort is a military fortification in Kaunas featuring underground tunnels, bastions, and defensive walls made of stone reinforced with concrete. The structure spans multiple levels with chambers designed for weapons storage, ammunition, and soldier quarters.
Built between 1882 and 1886 under Russian Empire orders, this fort was part of a larger defense system protecting western borders. The structure later served different military purposes before being converted into a museum to preserve its history.
The fort displays uniforms and weapons from different periods, showing how soldiers lived and worked within these walls across the decades. Visitors can see how the space was used for daily military life and defense operations.
Weekday visits offer a quieter experience for exploring the underground passages and chambers at your own pace. Wear sturdy shoes since the pathways are uneven and the tunnels can be damp and cool inside.
The fort was built with a special brick pattern that directs water away from the walls and protects the structure from moisture damage. This drainage system was an engineering achievement of its time and continues to work today.
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