Franco-Prussian War 1870 (≈ 1870)
Loss of Alsace-Lorraine, origin of the Séré de Rivières system.
1873
Adoption of the River Séré system
Adoption of the River Séré system 1873 (≈ 1873)
Defence plan approved by the Thiers government.
1874-1914
Construction of forts
Construction of forts 1874-1914 (≈ 1894)
Period of construction of 166 forts and works.
12 février 2007
Registration Historic Monument
Registration Historic Monument 12 février 2007 (≈ 2007)
Official protection of Sennecey Fort.
Aujourd'hui
Aujourd'hui
Aujourd'hui Aujourd'hui (≈ 2025)
Position de référence.
Heritage classified
Le fort (cad. AD 268) : inscription by order of 12 February 2007
Key figures
Séré de Rivières - General and prime contractor
Manufacturer of the defensive system including this fort.
Adolphe Thiers - President of the Council
Government adopted the system in 1873.
Origin and history
Sennecey Fort, also known as Fort Junot, was built as part of the defensive system designed by General Séré de Rivières after the 1870 War. This system was designed to compensate for the loss of Alsace and part of Lorraine, depriving France of the natural barrier of the Vosges. Adopted in 1873, this project provided for the construction of 166 forts, 43 small structures and 250 batteries between 1874 and 1914.
The fort of Sennecey, integrated with the defensive belt of Dijon, was to lock the passage to Paris and control the Morvan massif. Although never used for defence, it served as a store for food and ammunition, as well as a place of detention for German prisoners. The forts of that time were designed to be self-sufficient for three months, thanks to shops, wells and tanks.
The fort consists of a barracks served by a central courtyard, surrounded by dry ditches and flanked by caponières. The rooms, spread over one or more levels, were covered with vaults in a full-circle cannonhole. The fort was listed as a Historic Monument by order of 12 February 2007.
