Hamburg is the second-largest city in Germany and the eighth-largest city in the European Union. It is a popular tourist attraction likely because of its long and important history as a member of the medieval Hanseatic League, as a free imperial city of the Holy Roman Empire, and so on. It is also one of the most affluent cities in Europe. Hamburg has a major influx of international visitors throughout the year. A major center for European culture and history, it is an important site for travelers, scholars, and alike. The city features a great deal of museums, churches, theaters, festivals, parks, and gardens, as well as a wide range of architecture from different periods. Tourists, fly with Austrian Airlines to Hamburg and start experiencing all that it has to offer.