4D Puzzle Budapest. Enjoy puzzling: it develops manual skills, concentration, patience, visual and motor coordination, fosters imagination and creativity, and teaches the recognition of colors, shapes, counting, and spatial relationships. Build a model of Budapest, including all the important buildings: Layer 1 – history from hundreds of years ago, Layer 2 – how the modern city looks, Layer 3 – additional buildings, Layer 4 – the fourth dimension – time – arrange the buildings chronologically.