Untersiebenbrunn was first mentioned in a document in 1115 under the name "Sibenprunnen Meginhardi". In 1340 the first church was built as a fortified church. Escape routes led to the fortified church, which offered protection to the population in times of need. The baroque church was built in 1710 in place of the medieval fortified church, which had previously been largely demolished. It was completed in 1720 but rebuilt again after 35 years. UnterSiebenbrunn was elevated to the status of a parish in 1784 and incorporated into Melk Abbey.
The hill on which the church is located is now surrounded by a lining wall. It is the remainder of the defensive wall of the churchyard, from whose fortification the gate tower and a rampart have also been preserved. According to Schweickhardt, there were still four ramparts in the Kuruzzen period (after 1704). In the church hill there were underground passages and earthen stalls as well as a connection to the community well.
The water point is to the right of the entrance by the surrounding wall.