The Baroque pilgrimage church of Stadl-Paura rises on a hill near the right bank of the Traun River and was built between 1714 and 1724 by Johann Michael Prunner and Francesco Messenta.
An earlier chapel dedicated to St. Blaise stood on the same site and was already mentioned in the early Middle Ages.
The Trinity Church is considered Johann Michael Prunner's masterpiece. It is a creation of the highest perfection, both architecturally and theologically. Of particular note is that it was planned and constructed as a symbolic building with many allusions to the Holy Trinity.
Francesco Borromini was an artistic role model for many architects of the time, including Johann Michael Prunner. Recognizable Borromini influences include the sweeping and receding exterior walls and towers, and the interior floor plan with the semicircular altar niches (in the towers), which respond to the circular central space. And the indirect light that streams in from above and from the sides, illuminating the altarpieces and the small fresco in the lantern.
The wall openings behind the altars, the use of indirect light, and the church furnishings are all the work of Francesco Messenta in his role as interior designer.