The construction of the original chapel and current church of St. Ulrich can be assumed to have taken place around the year 1000.
The "upper church" already appears in documents in 1248. The creation of the "upper parish" can be dated to the 14th century. At the time of the Reformation, the church became Protestant through the influence of the Jörger von Pottenbrunn family and the Farn Zinzendorf von Wasserburg and in 172^ it became a branch church of Niederpottenbrunn.
The Ulrich church was completely renovated in 1729/30 under the direction of the St. Pölten master builder Josef Munggenast and has been the sole parish church of Pottenbrunn ever since.
The current church building is essentially medieval. The two choir buildings (main and south choir) date from around 1400, the vaulting of the main nave (net vault) from the second half of the 16th century.
The main altar with the altarpiece "Holy Family" created by Johann Georg Schmid dates from 1729 and was last extensively restored in 1991. Statues on both sides of the high altar (above) represent the holy bishops Ulrich (patron saint of the church) and Augustine.
The grave monument (1713) originally erected for Rosina Kuefstein in the front south choir was adapted as a war memorial in 1923. A special kind of work of art is the Mount of Olives relief from the 16th century in the south vestibule. The tower, built in 1799, was raised in 1955 and given a hipped roof instead of the original late Baroque hood.