"Rioja is located in the south of the Cantabrian Mountains along the Ebro river in the north of Spain. The region also has a river called Rio Oja, which is where the region likely gained its name. There are three main regions in Rioja, with each of them producing quite unique expressions of Rioja wines.
To the west is Rioja Alta, in the higher elevated area. This sub-region is renowned for its old-world wines that are often lighter on the palate due to the higher altitude. The wines coming out of Rioja Alavesa on the other hand are fuller bodies, with higher acid levels than those from Rioja Alta. The third area, Rioja Baja is the warmest and driest of all, and can in summer months can be exposed to very high temperatures drought so irrigation is now permitted in the region.
The reds (tinto) wines of Rioja are generally blends of Tempranillo and Garnacha with lesser amounts of Graciano and Mazuelo. Amongst the white (bianco) varieties, Viura is the most common though normally blended with Malvasia or Garnacha Blanc. Plenty of interesting Rosé wines are produced, most commonly from the Garnacha variety. Note that wineries in Spain are commonly referred to as bodegas."