Three million visitors a year flock to the banks of the Main River for one of Germany’s most colourful open-air festivals, the Museumsuferfest (Museum Embankment Festival). Frankfurt boasts 13 museums on the South Bank alone, and all of them gear up for the occasion with the rest of the city’s cultural institutions, theatres and music centres. For many visitors the real attraction is the spectacle: dragon-boat races, fireworks and food from all over the world. This festival is not for the early crowd – check the schedule, because events rarely start much before noon and go on well into the night. And don’t ignore the smaller celebrations that take place elsewhere in the city at the same time, such as the Castle Festival (Höchster Schlossfest).