The invention of Escape Rooms were groundbreaking for the aspects of gamification: applying game-design elements and game play principles to a non-game enviroment. That inspired us to create the City Escape Tour: we want to offer exciting tours trough the City of Bielefeld. Our long-term experience helped us to develope a very cool event. Based on a traditional paper chase, our City Escapes have a high standard concerning technical effects. Many puzzles include complex microcontrollers. Story elements were recorded in audiobook quality. The first City Escape Tour “The Vanished Professor” is family friendly and has no time limit. The second tour “The Encoded Apparatus” surprises its players with special effects.