The Ilsenburg Factory is a protected historical monument in Ilsenburg in Saxony-Anhalt in Germany.
The building complex is from around 1840 and was the seat of the upper Administration of the princely smelting works.[1] [2] Today, the buildings are used as residences.
In neoclassical style, the building material was Rogenstein (a term describing a specific type of oolite in which the cementing matter is argillaceous). The four buildings are each two stories, arranged around a courtyard. Except for the northern house, where the facades are unpaved.