Baku is a port city known as the “city of winds” and is the capital of Azerbaijan. It is the largest city in Azerbaijan, as well as the largest city on the Caspian Sea. Baku is known for its high concentration of oil fields. Rich in culture, Baku is an enjoyable tourist destination. Visitors can enjoy the national theatre, museums and galleries, philharmonic, opera, medieval old town sights, and an exciting nightlife.