The D.O. extends across the Barcelona regions of Maresme and Vallès, encompassing the municipalities of Alella, Argentona, Cabrils, El Masnou, La Roca del Vallès, Martorelles, Montornès del Vallès, Montgat, Orrius, Premià de Dalt, Premià de Mar, Santa María de Martorelles, Sant Fost de Campsentelles, Teià, Tiana, Vallromanes, Vilanova del Vallès, Vilasar de Dalt.
White wines are the stars of the region, especially those made from pansa blanca, the local name for the xarel·lo variety, traditionally used in cava.
The main grape varieties cultivated are garnacha blanca, garnacha tinta, moscatel, mataró, pansa blanca, pansa rosada, and picapoll. There is also room for international grape varieties.