Under the direction of the Prince Abbott Giel of Gielsberg, the St Lorenz Basilika was begun on 13 April 1652. Under the guidance of the masterbuilder Michael Beer the nave, the ground floor of the towers and the choir were constructed. Later, this work was continued by Johann Serro. The towers were originally finished without the final stage and cupolas, these were added in the last century. The exterior is quite austere, but this masks a fabulous Baroque interior.