In memory of the monks' old home, a church was probably built very soon - around 1130 - near the monastery mill and bakery. St. Blasien lies at the foot of the Waxenberg, which was first mentioned by name around 1290.
The church was rebuilt under Abbot Wolfgang von Retz around 1450. Frescoes in the nave date back to this time. The foundations of the Romanesque Blasius Church can also be seen in the altar area.
Two legends claim that the Waxenberg was originally intended by St. Altmann as a monastery mountain: The first legend reports that St. Altmann's monastery was built on the Waxenberg. However, the walls that were erected during the day stood on Göttweiger Berg the next morning. This is why the founder decided to build the monastery on its present site.
In the second legend, it is said that the monastery had already stood on the Waxenberg for some time. But the monks preferred the neighboring mountain. Their prayers were answered. One night, angels carried the building and its inhabitants to the Göttweiger Berg, and there was no longer any trace of the walls on the Waxenberg.