 The second phase of remodeling the abbey church in the Baroque style took place between 1680 and 1702.In the fall of 1683, a massive Ottoman army under the leadership of Kara Mustafa Pasha laid siege to Vienna and threatened Klosterneuburg.Most of the town and monastery escaped with the members of the imperial court, but two men—one priest and one lay brother—remained behind with the citizens to defend the town and monastery.