St. Peter's Church, Baroque church in Mainz, Germany

St. Peter's Church is a baroque hall church of three bays with a double-tower facade, built from 1749 to 1756/57 by architect Johann Valentin Thoman. The towers carry onion domes; the interior holds large baroque altars, stucco decoration and the pulpit by Johannes Förster. The ceiling frescoes are reconstructions by Karl Manninger.

The collegiate of St. Peter before the walls was founded in 944 by Archbishop Frederick north of the city wall; its provosts each led an archdeaconry. Swedish troops destroyed it in 1631 during the Thirty Years' War, and Archbishop Johann Philipp von Schönborn declined to rebuild. Archbishop Johann Friedrich Karl von Ostein had the present church built from 1749 to 1756/57 on the site of the abandoned Romanesque Odenmünster, consecrated in 1756. The collegiate was dissolved on 4 July 1802.

The ceiling frescoes showing the life and work of St. Peter were painted in 1755 by Joseph Ignaz Appiani and destroyed in the 1945 air raid; Karl Manninger recreated them from colour photographs. On the ninth day after Corpus Christi, the parish distributes the Batzekuche, a round, thick yeast-dough cake given out at the Herz-Jesu festival since the early 19th century.

The church stands in the Bleichenviertel, below the Deutschhaus, in the northwest of Mainz's old town. It serves today as the parish church of St. Peter/St. Emmeran. The south tower holds all the bells in a steel frame of 1960/62; the large Heilandsglocke survived the fall of the tower in 1944 almost undamaged.

The modern altar by Gernot Rumpf shows Peter's fishing net filled with fish that, on closer look, turn out to be people, one wearing a fool's cap. The same sculptor made the ambo and the Paschal candle. In the Landvogt crypt, a bronze by Karlheinz Oswald marks the 50th anniversary of the death of pastor Franz Adam Landvogt in October 2003.