As the global popularity of Spanish wine grows, more exciting options are becoming available in restaurants and wine shops. While many people are familiar with Spain's premium red wines from regions such as Rioja and Priorat, the country also produces stellar white wines. These wonderful – and often underappreciated selections – represent a great value with excellent variety and versatility. Like its red wines, Spain's white wines are labeled with their appellation of origin – or Denomination of Origin (DO). This designation represents the grape's place of origin, and typically each DO will specialize in one or more different wine styles made from specific grapes. For those new to Spain, knowing what to expect can be challenging if you are unfamiliar with the region.  Below is a breakdown of some of Spain's most popular (and delicious) white wines. This list includes their region of origin as well as the primary grapes from which the wines are made. Use this as a guide to expand your understanding of Spanish wine.