Crown fortress Olomouc, Military fortification in Olomouc, Czech Republic.

Crown Fortress Olomouc is a military fortification with a central wall system, two half-bastions, and connecting ramparts arranged in a geometric pattern. The entrance gate and the arrangement of walls demonstrate standard defensive design from the middle 18th century.

Construction began in 1754 on the site of the former village of Závodí, and the crown wall itself was finished within two years. In the second half of the 19th century two artillery laboratory buildings were added. After Olomouc's fortress status ended, the army kept the site and it also served residents as an occasional laundry-drying ground.

The site takes its name from the crown-shaped wall: a five-pointed bastion flanked by two half-bastions. Since 2008 it has belonged to the Muzeum Olomoucké pevnosti association, which opened a museum in the 1758 gunpowder magazine on 15 April 2013. Concerts have brought performers such as Lucie Bílá, Čechomor and Jethro Tull to the grounds.

The site lies near the city centre, and its grounds are entered through the crown wall area; the terrain is mostly flat, with the ramparts and the 1758 powder magazine reached on foot. The Museum of the Olomouc Fortress and the Pevnost poznání science centre share the grounds, so allow time for both.

The baroque powder magazine of 1758, now housing the fortress museum, is described as a unique monument of its kind in the Czech Republic. Its ground floor displays a plaster model of Olomouc's fortifications by sculptor Jiří Žlebek, with reproductions by painter Otakar Suchan.