EuroGraphics School of Atens by Raphael 1000-Piece Puzzle. Raphael's masterpiece features the most famous philosophers of ancient times moving within an imposing Renaissance architecture. The list includes none other than Aristotle, Plato, Socrates, Pythagoras, Heracleitus, Diogenes and Ptolemy to name a few. Strong high-quality puzzle pieces. Made from recycled board and printed with vegetable based ink. This superior quality puzzle will delight and educate all at the same time.