Vinos de Madrid - established in 1990 - is a Denominación de Origen for wines to the south of Spain’s capital city, which is divided into three distinct sub-zones - Arganda, Navalcarnero and San Martín. Whilst the climate can be described as broadly continental, subtle variation across the three areas creates a unique set of growing conditions in each. Garnacha and Tempranillo (known here as Tinto Fino), are the most prominent red grapes, whilst Airén and Albillo are the most significant whites. Today, the Vinos de Madrid DO continues to grow its reputation as a quality wine region, having been associated with mass market production for a large part of the twentieth century.