Johanniskirche

Johanniskirche - Credit: Wikimedia Commons

St. John's Church (in German Johanniskirche) is located beneath Mainz Cathedral in the historical center of Mainz, Germany. This 1100-year-old church was the first episcopal see of the Bishop of Mainz. It is the oldest church in Mainz,Second oldest church in Germany uncovered, retrieved 26 March 2018„Die Kirche ist die älteste der Stadt sowohl nach den Nachrichten als auch nach der erhaltenen Bausubstanz.“ the oldest cathedral in the Germany of today and the only preserved cathedral building from late Carolingian and early Ottonian time in Germany.St-Johannis_Mainz on: Romantic Germany, retrieved 5 June 2019 Read more on Wikipedia

type: building
date from: None

Source: en.wikipedia.org