Mediomatrici

Metz ( ; ; , then ) is a city in northeast France located at the confluence of the Moselle and the Seille rivers. Metz is the prefecture of the Moselle department and the seat of the parliament of the Grand Est region. Located near the tripoint along the junction of France, Germany and Luxembourg, the city forms a central part of the European Greater Region and the SaarLorLux euroregion.

Saverne (, ; Alsatian: ; ) is a commune in the Bas-Rhin department in Grand Est in north-eastern France. It is situated on the Rhine-Marne canal at the foot of a pass over the Vosges Mountains, and 45 km (27 mi) northwest of Strasbourg.

Cocheren (; ) is a commune in the Moselle department in Grand Est in north-eastern France.

Vitry-sur-Orne (, literally Vitry on Orne; ) is a commune in the Moselle department in Grand Est in north-eastern France. It is part of the urban area of Metz.

Bliesbruck (; ) is a commune in the Moselle department in Grand Est in northeastern France.

Pierrevillers (; ) is a commune in the Moselle department in Grand Est in north-eastern France. It is part of the urban area of Metz.

Gersheim () is a municipality in the Saarpfalz district, in Saarland, Germany. In its southwest it borders the French region Grand Est. Gersheim is located approximately 15 km southwest of Zweibrücken, and 20 km southeast of Saarbrücken.

thumb|right|Civitas of the Mediomatrici thumb|City scape of Divodurum Mediomatricum (ca. 2nd century AD), ancestor of present-day Metz, capital of the Mediomatrici. The Mediomatrici (Gaulish: *Medio-māteres) were according to Caesar a Gaulish tribe at the frontier to the Belgicae dwelling in the present-day regions Lorraine, Upper Moselle during the Iron Age and the Roman period.