Abbey of Saint-Arnould

The Abbey of Saint-Arnould, St. Arnold, Saint-Arnoult or Abbey of the Holy Apostles is a Benedictine abbey residing in Metz since the 6th century.

The origins of the abbey are a mystery. According to legend, it was founded in the 2nd century by Bishop Patient Metz as the Basilica of St. John Evangelist. Although no historical record exists before the 6th century, it was named the Church of the Holy Apostles in 715. It stood in front of medieval ramparts of the Hôpital Notre Dame de Bon Secours, near the Roman road leading to Toul and Lyon.

According to another source, this was the site of the Church of St. Theresa of the Child Jesus, which stood in front of the hospital.

Source: Wikipedia