Located on a hill at the confluence of the Moselle and Seille and at the crossroads of major communication routes, Metz knows traces of occupation from 3000 BC. Since it is crossed by cultural influences from multiple geographic backgrounds.   Metz has a unique architectural heritage, mixed, rich legacy of French and German nations.   The application "Stories of Metz", produced by the City of Metz in the project "Stones Digital - Digital Steine" (INTERREG VA GR, 2014-2020) offers several tours t