Challenge yourself with puzzles to solve in the historic center to see Lille like you've never seen it before! The “Secrets Of” urban adventures are exploration games during which you will discover the tourist spots of the city but also hidden and unexpected corners. During your adventure, you will learn anecdotes about the monuments and facades of the city that you will encounter along the way. All the puzzles in this game will require you to carefully observe your surroundings in order to find clues or answers!