Schloss Aham, Heritage château in Aham, Germany.

Schloss Aham is a castle in Aham with traditional Bavarian features visible in the main building with its stepped gable and several auxiliary structures arranged around a pond. The entire complex is protected as a historical monument and preserved as a cohesive unit where residential and working buildings from different periods remain standing.

The castle originated around 900 CE as a fortified site on the Vils River to protect the region from attacks. In the early 1800s, it underwent changes as it passed to new owners and its purpose shifted over time.

The castle chapel is dedicated to St. George. At his own request, Maximilian Joseph Graf von Montgelas, the Bavarian minister who acquired the Hofmark Aham in 1833, was buried in its crypt in 1838. The chapel and the castle remain in private ownership.

Schloss Aham and its chapel of St. George are private property and not open to the public, so visits are limited to views from the surrounding lanes. The complex stands at Schlossstrasse 20 in Aham, framed by a vehicle track, with only a pond remaining of the former moat. The road from Vilsbiburg to Frontenhausen passed through the estate until 1955.

Until 1955, the main road between Vilsbiburg and Frontenhausen ran directly through the castle grounds before a new bridge over the Vils was built. This change marked a turning point for the estate, as traffic then began to flow around the buildings instead of through them.