Spanish wine is renowned for its diversity and quality, produced in various regions across the country. The most famous wine regions include Rioja, Ribera del Duero, and Priorat, each known for unique grape varieties and styles. Spain is the third-largest wine producer in the world, with a rich history of winemaking that dates back thousands of years. The primary grape varieties used in Spanish wine include Tempranillo, Garnacha, and Albariño. Spanish wines are categorized into several classifications, such as Crianza, Reserva, and Gran Reserva, which indicate the aging process and quality. These classifications help consumers choose wines that suit their preferences.