Burg Neudeck, Bayern, Medieval castle ruins in Bad Birnbach, Germany

Burg Neudeck, also called Neideck or Schloss Neudeck, is a vanished medieval spur castle on a 435 m high site southwest of Bad Birnbach. Its position commanded the Rottal. The castle itself no longer stands; the area is recorded as a Bodendenkmal with subterranean late medieval and early modern remains and a high medieval predecessor building.

The Neudeck family is documented in the Rottal from the 12th century, with Wolftrigil de Nideke appearing as a seal witness in 1160. In the 14th and 15th centuries the Schenken von Neudeck held the castle and acquired Anzenkirchen, Asenham and Loderham. They sold it with their estates to the Counts of Törring in 1408; the Törrings sold it to the Bohemian Hollup family in 1464.

The site shows medieval building methods and defense design through its remaining walls and findings, revealing how the nobility lived at that time. Visitors can still trace the layout of living spaces and fortified areas in the ruins.

The castle site lies on a spur at 435 metres southwest of Bad Birnbach, above the Rottal. It is a Bodendenkmal (D-2-7544-0010) with no standing buildings, so expect uneven ground and no facilities. Approach on foot from Bad Birnbach or park nearby and walk up; paths can be muddy after rain.

Beneath the castle ruin lie hidden structures and objects from the late medieval and early modern periods, gradually revealed through excavations. These underground layers tell stories about daily life within the fortress, going beyond what the standing stones alone can show.