Ravensburger - Puzzle The Hidden World of Fair 4000 Pieces. Ravensburger puzzles mean puzzle fun in premium quality. Whether for beginners, advanced puzzlers, or professionals – there is the right number of pieces and the perfect motif for every puzzle lover. The puzzle pieces are distinctive and unique, made with handcrafted cutting tools. Decades of experience in puzzle production and a high standard of quality make the hearts of puzzlers race and demonstrate how everything fits together. Here, passion is lived. Learning content: motor skills, concentration. Game instructions available in German, English, French, Spanish, Italian, Dutch.