St. Christoph 's Church, Gothic church in Mainz, Germany

St. Christoph's Church in Mainz is a ruined early Gothic basilica with a nave of four bays, a single-bay transept whose northern arm forms a tower, and a choir with a five-eighth apse. The Romanesque tower, with paired arched windows from around 1240, survives; the rest was built from about 1280 to 1330. The outer walls stand, supported on the north by concrete buttresses.

A chapel on this site was granted to St. Maximin's Abbey in Trier in 893, and Pope Innocent II confirmed the abbey's patronage in 1140. The present church was built from about 1280 to 1330, retaining a Romanesque tower from around 1240. In 1543 Peter Canisius took his Jesuit vows in the parish house. Air raids in 1942 and 1945 left only the outer walls, which were re-erected and buttressed with concrete in 1963–64.

The church bears the name of Saint Christopher and displays traces of its medieval past through stonework and decorative details visible throughout the building. Visitors can observe the Gothic elements that define both the interior and exterior.

Visitors can view the church during the week and join guided tours that explain the architecture and the site's transformation after the war. It is helpful to check opening times beforehand, as these may vary depending on the season and religious services.

The 1667 organ by Johann Peter Geissel no longer stands here: it was sold to Gau-Bischofsheim, where it survives in the parish church as the oldest organ in the Diocese of Mainz. In the tower's lower chapel, Alois Plum's windows light the services of an Orthodox parish.