The previous minster of today's minster was a three-aisled, cruciform, Romanesque pillar basilica with a vestibule, which had a three-part, just closing choir and was attached to the monastery building according to the Hirsau construction scheme. There was a tower above the crossing of the basilica, which was consecrated on September 13, 1109. In the 15th and 17th centuries, chapels were added to the nave. After the monastery was rebuilt in the Baroque style in 1688, the abbot Augustin Stegmüller decided to demolish the Romanesque cathedral and replace it with a new and larger building that was supposed to cope with the increasing flow of pilgrims.
Construction of the choir and tower began in 1739, and the foundation stone for the nave was laid on July 11, 1740. The builders were the brothers Josef and Martin Schneider, who built a single-nave wall pillar church with chapels, a gallery, a short transept and a dome over the crossing according to the Vorarlberg cathedral scheme. Two large towers with an onion helmet were built at the choir. When the Schneider brothers refused to vault the church, the building was handed over to the Munich architect Johann Michael Fischer, whose new plan for the abbey church created one of the most important buildings of the late Baroque era. In 1747 the vault was closed and in 1765 the building was largely completed, so that the church could be consecrated on September 1st. In 1785 the building was finally completed. No major changes have taken place here since then.