Maria Immaculata, Parish church in Biburg, Germany

Maria Immaculata is a Romanesque pillar basilica in Biburg, built on a Latin cross plan from unplastered limestone and tuff blocks. Its light grey ashlar facade and steep red-tiled roof shelter a nave with tall round-arched windows and a lower row of small arched openings. Two 36-metre towers with green pyramidal roofs and crosses rise above the side choirs at the right end.

Bishop Otto of Bamberg received Biburg Castle in 1125 from Count Heinrich I of Sittling and his wife Bertha, and construction of the church began at once. The Romanesque pillar basilica was provisionally consecrated in 1133 and formally consecrated in 1140 by the bishops of Regensburg and Bamberg. The monastery became a Benedictine abbey under Abbot Eberhard, later Archbishop of Salzburg. After the women's convent burned in 1278, the monks vaulted the side aisles in the Gothic style from 1394 and the nave by 1532.

The church is dedicated to the Immaculate Conception, and its full name Maria Immaculata reflects that Marian dedication. Since 1785 it has served as Biburg's parish church, taking over the role of the older St. Stephan church, which was demolished. The tomb monument of Blessed Bertha von Ratzenhofen, co-founder of the monastery, was moved here in 1968 from the Allersdorf pilgrimage church and stands in the apse of the north aisle.

The church stands on a hill above the Abens valley at the northern edge of the Hallertau. The west portal, the original entrance for people outside the monastery, is exposed to the weather; a second entrance is on the west side of the south transept. All four bells hang in the south tower, so the sound openings of the north tower are silent.

The north tower's sound openings no longer serve their purpose: all four bells hang in the south tower. The two 36-metre towers rise above the side choirs, their upper storeys pierced by paired arched openings, and are topped by pyramidal roofs with a sphere and cross.