Antoniterkloster Grünberg, Medieval monastery in Grünberg, Germany.

Antoniterkloster Grünberg is a monastery complex with a trapezoidal layout whose outer wall rises above the city fortifications between Marktstraße and Rosengasse streets. The compound consists of several interconnected structures that reflect the typical arrangement of a medieval religious center.

The monastery was probably founded in 1193 and grew into a general preceptory whose daughter houses reached from Friedberg to Norway and Latvia. The last preceptor died in 1526, when Landgrave Philipp dissolved it after the Homberg Synod. From 1577 Ludwig IV had the complex rebuilt as a widow's residence for Hedwig of Württemberg, and it later served as a hunting lodge.

The monastery takes its name from Saint Anthony and displays medieval craftsmanship through carved stonework and Gothic windows that remain visible today. Visitors can recognize these architectural details in the preserved buildings and understand the religious importance this place once held.

The former monastery buildings now house various institutions and are partially accessible, with some spaces serving public functions. The site sits near the old town center and is easily walkable, making it simple to include in a city tour.

The two-storey timber-framed Mönchsbau on the town wall dates from around 1500, not 1398, and originally projected beyond the outer walls. Its refectory extension along the wall survives only as a polygonal oriel on the field side. The monastery church was largely renewed after the great town fire of 1391.