Festival on Óbudai Sziget (Óbuda Island) Attracts rock fans, world music hippies and the usual festival crowd every August. It has become one of the best-known festivals in Europe, offering a multitude of cultural, culinary and musical events. Day tickets cost €45 and festival passes, including camping cost €170 if purchased before 15 April and €200 after. Festival passes without camping cost €30 less. Sleeping in a tent under the open sky instead of a hotel room gives the complete festival feeling. Safes are available for valuables.