Osaka is Japan's second-largest city and a major economic hub in the Kansai region. Known for its modern architecture, vibrant nightlife, and rich culinary scene, Osaka offers a blend of historical landmarks and contemporary attractions. The city is famous for its street food, including dishes like takoyaki and okonomiyaki, and hosts numerous festivals throughout the year. Key attractions include Osaka Castle, Universal Studios Japan, and the bustling Dotonbori district.