Schloss Asch, Architectural heritage monument in Moosburg an der Isar, Germany

Schloss Asch is a three-story castle with a half-hipped roof located at the base of Westerberg near the old town of Moosburg an der Isar. The building once served as a residence for local nobility and remains a recognizable landmark in the surrounding landscape.

The Lords of Asch, documented around 1000, gave up their seat in the 12th century for the ducal court at Landshut; Wolf von Asch, a princely councillor and hunt master, bought it back in 1541 and had the present three-storey building erected within a moat. It appears as a Hofmark seat in the Moosburg court records of 1618, 1654, 1702 and 1752, and until the 1848 revolution housed a patrimonial court of the second class. The family line died out in 1883.

The name Asch comes from the noble family first recorded around the year 1000. The family gave up the seat in the 12th century for influence at the ducal court in Landshut, and Wolf von Asch bought it back in 1541. Court descriptions of 1618, 1654, 1702 and 1752 list the castle as a Hofmark seat.

Schloss Asch stands below the Westerberg, at the foot of Moosburg an der Isar's old town in the Freising district. The moat was filled with rubble after the town fire of 1865, and the gate tower that once stood in front of it is gone, so the building is seen from the surrounding streets and paths.

In 2014, researchers discovered a 250-meter-long secret tunnel connecting Moosburg to the castle, built around 1510 using professional masonry techniques. This underground passage demonstrates the engineering capabilities of the period and the strategic connections between the estate and the town.