[2] Located just outside of Innere Stadt in Wieden, approximately 200 metres outside the Ringstraße, the church contains a dome in the form of an elongated ellipsoid.

With over 200 prominent guests attending, Kiesler wore "a black-and-white print dress" and carried "a bouquet of white orchids.

"[4] Since Karlsplatz was restored as an ensemble in the late 1980s, the church has garnered fame because of its dome and its two flanking columns of bas-reliefs, as well as its role as an architectural counterweight to the buildings of the Musikverein and of the Vienna University of Technology.

This program continues in the interior as well, above all in the dome fresco by Johann Michael Rottmayr of Salzburg and Gaetano Fanti, which displays an intercession of Charles Borromeo, supported by the Virgin Mary.

The high altarpiece portraying the ascension of the saint was conceptualized by the elder Fischer and executed by Ferdinand Maxmilian Brokoff.

The altar paintings in the side chapels are by various artists, including Daniel Gran, Sebastiano Ricci, Martino Altomonte and Jakob van Schuppen.

[5] It is a wooden structure with rich floral, vegetal, rosette and rocaille ornaments, the finer carvings made of hard walnut, in a gold and brown colour scheme.

The abat-voix forms a theatrical canopy with two putti holding a cross and a chalice with host; there is a flaming urn on the top.

A wide rim was added distorting the original proportions, obscuring the elegant, swirling lines and creating a top-heavy effect.