Alentejo is a region in the south of Portugal, located between the Tagus River and the Algarve. It is one of the oldest regions in the country, with evidence of human occupation dating back to the Paleolithic period. The region has been inhabited by various civilizations throughout its history, including the Celts, Romans, Visigoths, and Moors. During the Middle Ages, Alentejo was an important center of trade and culture, and it was also the site of several battles between the Portuguese and the Moors. In the 16th century, the region was annexed by Portugal and became an important agricultural center. Today, Alentejo is known for its beautiful landscapes, traditional cuisine, and vibrant culture.