Fort XII, Military fortification in Magdeburg, Germany

Fort XII is a 19th-century military fortification in Magdeburg featuring a drawbridge, ammunition storage, barracks, and a water-filled moat that surrounds the complex. The structure displays typical characteristics of Prussian fortress design from that period.

Fort XII was built between 1866 and 1873 as one of 14 forts in a ring 1,000 to 3,000 metres from Magdeburg's core fortress, erected after the introduction of rifled gun barrels. Magdeburg's fortress status was lifted by cabinet order on 23 January 1900, and from 1908 the site was absorbed into the public part of Rotehorn Park. In 1927 it was converted into an open-air theatre for the Deutsche Theaterausstellung, its basic structures left unchanged; in the 1980s it belonged to the Ministry for State Security.

The fort's earthworks were reshaped into an open-air theatre for the Deutsche Theaterausstellung in 1927, with the basic structures left unchanged. A café now occupies the remains of the fort, which belongs to the Rotehorn Park.

The fort is located within Rotehorn Park and can be easily accessed on foot via park pathways. The site is suitable for walking tours and does not require special equipment or preparations.

The fort's hexagonal outline survives because the 1927 Deutsche Theaterausstellung converted it into an open-air theatre without altering its basic structures. Visitors can still read the glacis, traverses, gatehouse, reserve casemate and powder magazine around the water-filled moat.