The capital of Azerbaijan is Baku. Situated on the Caspian Sea, Baku is the largest city in Azerbaijan and serves as its economic and cultural center. The city has a rich history that dates back thousands of years and features a mix of modern and ancient architecture, including the iconic Flame Towers and the medieval Old City, which is a UNESCO World Heritage site. Baku is known for its vibrant arts scene, lively nightlife, and significant role in oil production in the region. It has also hosted various international events, including the Eurovision Song Contest and the Formula 1 Grand Prix.