Pilgrimage Church of the Nativity of Mary (Altenburg)

Wikipedia (Maria Altenburg (Altenburg), 2023-03-25):
de.m.wikipedia.org/wiki/Maria_Altenburg_%28Altenburg%29
Wikipedia (List of monuments in Moosach, 2023-03-25):
de.m.wikipedia.org/wiki/Liste_der_Baudenkmäler_in_Moosach#Altenburg
"Catholic pilgrimage church of St. Maria Altenburg ... simple hall building with drawn-in polygonal choir, attached two-storey sacristy and southern flanking tower with gabled roof, marked 1405, extension marked 1467, tower 1583, baroque renovation 1711 ... D-1-75-128-5"

Archdiocese of Munich and Freising (Pilgrimage Church of the Nativity of the Virgin Mary, Altenburg, 2023-03-25):
erzbistum-muenchen.de/pfarrei/pv-moosach/wallfahrt-kirche-maria-altenburg

Maria Altenburg is a pilgrimage church built in the Middle Ages in Moosach.
The church consists of a hall building with a drawn-in polygonal choir, an attached two-storey sacristy and a southern flank tower with a gabled roof. It was first mentioned in 1391. In 1711 it was baroque-style and decorated with stucco.

The late Gothic church, built on the site of the Altenburg castle chapel (before 1250), was first mentioned in 1391. It was consecrated in 1405. The first structural changes were made in 1467, when the church received a new choir and the southern pointed arch portal, which is now bricked up. Maria Altenburg was renovated in Baroque style in 1711 and decorated with rich stucco and fresco paintings. The church was restored in 1975 and 1993/1994.

Source and further information
de.m.wikipedia.org/wiki/Maria_Altenburg_(Altenburg)