Mainz Cathedral

St. Stephen's Church in Mainz was founded in 990 by Archbishop Willigis. The present church was built later, from 1267 to 1340, but has retained the plan of the Willigis building. From 1462 to 1499, the cloister was added to the south side. During the Baroque period, the interior of St. Stephen's Church was decorated accordingly, but in 1857 a nearby powder magazine tower exploded, causing the church to lose its Baroque furnishings.

The Christ Church in Mainz is a Protestant church built between 1896 and 1903 according to the plans of Eduard Kreyssig. The building is reminiscent of the Italian High Renaissance style. In addition to religious services, the Christ Church is also popular for music. Since 1954, the Mainz Bach Choir and Orchestra have been using the church regularly.

The New Mainz Synagogue, inaugurated in 2010, is the successor building to the former Mainz Synagogues. Mainz, or Magenza as it is called by the local Jewish community, had been an important Jewish centre on the Rhine since Roman times, and lost its importance only with the Second World War. After the fall of the Berlin Wall, the high number of immigrants from Eastern Europe expanded the congregation in the 1990s and, as new premises had to be found, the construction of the synagogue was decided in 1999. Architect Manuel Herz received the German Façade Award for the Ventilated Curtain Wall (VHF) 2011 for the building.