Officially Pfarrkirche Heilig Kreuz (Holy Cross), the large church in the Rheingau region is called Dom although it was never a bishop's seat.

The architect Philipp Hoffmann, who was born in Geisenheim, proposed to expand the church and build a new facade and towers.

[2] Hoffmann, who later built landmarks in Wiesbaden such as St. Bonifatius and the Russian Church, expanded the nave by adding two more vaults similar to the three Gothic ones, and created a new west facade with neo-Gothic towers.

[8] The organ was commissioned in 1839 and built in 1842 by Gebrüder Stumm [de], with 31 stops, two keyboards and pedal.

[9] Martin Lücker played in 2012 a concert with a program that Albert Schweitzer had performed in Frankfurt in 1928 on a similar instrument that was destroyed.