Maremma is more broadly understood to mean a landscape in central Italy that includes all of southern Tuscany and parts of northern Lazio. Originally, it was a marshy landscape connected to the Tyrrhenian Sea, which in Roman times was called "Maritima Regio". This gave rise to the Spanish term "Marisma" (marshy coastal land). In a narrower sense, however, the Maremma only includes the flat coastal strip between the Gulf of Follonica, the courses of the Bruna and Ombrone rivers and the lagoon of Orbetello on Monte Argentario, interrupted by the hill ranges of the Monti dell'Uccellina. The area has been called the "El Dorado" of viticulture and the most interesting development area in Tuscany.