A Mannheim cult location that you need to have visited if you want to feel you've properly arrived. Part of the Jungbusch scene for over 60 years, the Onkel Otto Bar is the place for celebrating and dancing. On Fridays and Saturdays, it attracts students as well as creatives, newcomers and long-time residents. Once you've made it inside, you won't want to leave again too fast - the bar is open until 3 a.m.