What architectural features did Johann Bernhard Fischer von Erlach’s churches in Salzburg share?

Johann Bernhard Fischer von Erlach’s churches in Salzburg are characterized by several shared architectural features that reflect his mastery of Baroque art and architecture. These common elements include:

• Two-towered facades: Every church he designed in the city features a facade anchored by two towers.1
• Dynamic curves: The facades are accented by dynamic, undulating curves and elegant decorative elements.1
• Balanced interiors: In his lofty, well-proportioned interiors, he sought to achieve a structural balance between longitudinal and central architectural schemes, a challenge he addressed throughout his career.1

While these churches share a unified design language, Fischer von Erlach ensured each building possessed a unique character tailored to its specific location and function, such as whether it served a university, a seminary, or a nunnery. For instance, the Dreifaltigkeitskirche utilizes a concave facade to contrast with adjacent buildings, while the Kollegienkirche employs nearly geometric forms to serve as a symbolic crown for the university complex.1