Petersberg, Mountain summit in Thuringia, Germany

Petersberg is a summit near Eisenach in Thuringia that rises approximately 344 meters above the surrounding landscape. The top features remnants of buildings and structures from various periods that shape the appearance of the mountain.

The hill name Petersberg recalls a baptismal church of St. Peter built in the High Middle Ages, considered Eisenach's oldest church and linked to Boniface's missionary work. In the Thuringian War of Succession, nobles from Stockhausen built Malittenburg on a spur above Fischbach as a base for their own territory; the attempt failed and their castles were destroyed. From the 1920s the southern and eastern slopes were reforested with pines and spruces.

The name Petersberg recalls the early medieval baptismal church of St. Peter, regarded as Eisenach's oldest church and linked to Boniface's missionary work. The old field name also marks the historic boundary of the city, separating the Trenkelhof and Fischbach districts.

The summit area holds a concrete shelter built into the rock near the top, later used as the site of a broadcasting installation with a free-standing steel lattice tower since the 1950s. The upper south slope and eastern part have been reforested with pines and spruces since the 1920s. The north side is partly pasture and partly used for cherry orchards.

Near the summit, a concrete shelter was cut into the rock during the Second World War for a military air-surveillance and reporting post. Since the 1950s a transmitting station with a free-standing steel lattice tower has stood on the same spot.