Moselle City is the name of a city in France, located in the Grand Est region. The city is also known as Metz, which is the four-letter answer to the crossword puzzle. Metz is the prefecture of the Moselle department and the seat of the parliament of the Grand Est region. It is located at the confluence of the Moselle and Seille rivers. Metz has a rich history, having been ruled by a succession of different peoples and empires throughout its long history. It is now a major cultural and economic center in the region.