Schloss Ebelsberg, Medieval castle and military museum in Linz, Austria.

Schloss Ebelsberg is a former fortification in the Ebelsberg district of Linz, Austria, built around a nearly trapezoidal inner courtyard on two levels, with three towers and two gates. Its white outer walls are pierced by rows of small dark windows, and two round white towers with crenellated tops stand in the courtyard, the taller one carrying a projecting dark wooden structure. The Linz gate opens toward the market square, while the Ennsertor leads to a chestnut avenue through the 19th-century castle park.

Schloss Ebelsberg is first recorded in 1154, when Bishop Conrad of Passau named the area Ebelesberc; the Passau bishops then held the site for some 600 years. It was devastated in fighting between Duke Frederick II and Bishop Rüdiger in 1242–1244 and rebuilt in 1256 under Bishop Otto von Lonsdorf. A fire during the 1809 Battle of Ebelsberg left it a ruin until Baron Karl Theodor von Kast bought it in 1825.

The name Ebelsberg goes back to Bishop Conrad of Passau, who in 1154 called the area Ebelesberc. The Passau bishops used the castle as a summer or winter residence. Today the Kast family's estate administration owns it, and the Schloss Ebelsberg cultural society uses it for larger events such as Christmas markets and concerts.

Schloss Ebelsberg is privately owned by the Kast family and is not open as a regular visitor attraction; its courtyard and halls are used for events such as concerts and Christmas markets. The Linz gate faces the marketplace, while the Ennsertor opens onto a chestnut alley through the 19th-century castle park. Check event dates before planning a visit.

Inside the castle there are three hand-crafted dioramas depicting the 1809 Battle of Ebelsberg from different angles, each populated with hundreds of tiny figures. The level of detail in these scenes makes it possible to follow the course of the fighting step by step.