Lazio, a.k.a. Latium, is the region that surrounds Italys capital of Rome. We often associate ancient Roman wine consumption with never-ending goblets of red wine, but this is predominately a white wine producing area.
It was not until the Italian unification in the late 19th century when Rome officially became the capital of Italy that there was once again an interest in strengthening wine production.
The soils, primarily of volcanic composition, are particularly suited to white wine production for their contribution to the grapes acidity. As are the various cool microclimates from factors such as the Tyrrenhian Sea on the west coast and the Apennines Mountains.