Cagliari is the capital city of Sardinia, an island located in the Mediterranean Sea. Known for its rich history, Cagliari features ancient ruins, including the Roman amphitheater and the Castello district, which showcases medieval architecture. The city is also famous for its beautiful beaches, such as Poetto, which attracts both locals and tourists. The economy of Cagliari is diverse, with sectors like tourism, trade, and agriculture playing significant roles. The city is home to the University of Cagliari, which contributes to its vibrant cultural scene. Cagliari's mild climate makes it an appealing destination year-round.