CubicFun 3D Puzzle Ship-Series "The Era of Navigation" A fun and challenging 3D puzzle of The Voyage Century Constructed using CubicFun's unique slotting system, Puzzle: Similar building toy like Lego, Difficulty Level: 2, Number of Pieces: 73, Age: 3 Years And Up Construction Time: 50-60 minutes Great holiday gift for young and old, Develop logical thinking, Best for schools, Day cares and Educational institutions, fun and attractive, beautiful souvenir.