Parish Church in Mauthausen, Parish church in Mauthausen, Austria

The Parish Church in Mauthausen is a Gothic religious building with pointed arches, ribbed vaults, and tall windows that fill the interior with natural light. The space contains stone carvings and religious artworks reflecting different construction phases.

Excavations in 1982 uncovered foundations of a tower, possibly Roman, a high-Romanesque church from around 1200 and fragments of an early Gothic apse. After Hussite destruction in 1424, the church was rebuilt in late Gothic style under Frederick III in the mid-15th century. The Gothic gable tower was raised in 1689 and given a Baroque helm; in 1901 it received a neo-Gothic spire.

The church is dedicated to Saint Nicholas of Myra, and the Annakapelle on its southeast side was also called the Egkenfelderkapelle after its patron Hans Egkenfelder (died 1532). His house mark survives on two keystones and on his gravestone. The parish has existed independently since 1613 and is incorporated into St. Florian Monastery.

The church stands on a hill above the market square and the Danube, reached on foot from the Marktplatz. A barrier-free access was installed at the start of the 21st century. Inside, the seating was rearranged and the steps altered to improve sightlines, and a Lichtstiege links the interior to the history of the Nazi period in the municipality.

During 1980–83 renovations, workers uncovered walled-up Gothic tracery windows, early Baroque paintings on the columns and a fresco dated 1590 on the outside of the Anna Chapel. Three mason's marks were also found on the west gallery pillars in 1982, one attributed to the mason Frosnitzer.