Stadtfest is the biggest street party in Karlsruhe, taking place every year in September. It offers a variety of food and drink options, as well as entertainment for all ages. The festival has been running for over 40 years and attracts thousands of visitors each year. One of the notable features of Stadtfest is its diverse range of activities, including live music, street performers, and children's activities. This makes it a great choice for budget-conscious travellers looking for a fun and affordable way to experience the local culture.