Tollhaus Sommerfestival is a free theatre and music festival in Karlsruhe that takes place every summer. It offers a diverse range of performances, from theatre and dance to live music and comedy. The festival takes place in a unique setting, with performances taking place in a large tent. This creates an intimate and atmospheric experience for the audience. Tollhaus Sommerfestival has been running for over 20 years and has become a popular event for culture lovers in the region. Its free admission makes it a great choice for budget-conscious travellers looking for a unique and affordable way to experience the local arts scene.