Fortress Ingolstadt-Werk Nr. 139 Lagerschanze Nr. 7

The Ingolstadt State Fortress, which includes Lagerschanze No. 7, originated from the conversion and expansion of the medieval city fortifications. From 1537, Duke Wilhelm IV began to develop Ingolstadt into a state fortress to secure its strategic importance on key trade routes and the Danube. After the Thirty Years' War, the facilities were strengthened between 1654 and 1662 under Christoph Heidemann. The fortress played a role in the War of the Spanish Succession in 1704 and the War of the Austrian Succession in 1745, though it surrendered without resistance in 1745. Following a period of decay, the fortress was destroyed by French troops from 1800. Reconstruction as a neoclassical fortress began in 1828 under Ludwig I and continued until 1849, making it one of the most expensive construction projects of his reign. Later, additional outworks and an outer fort belt were added to accommodate advancements in artillery technology.