Alexander Mosaic
The Alexander Mosaic is a Roman floor mosaic originally from the House of the Faun in Pompeii that dates from c. 100 BC. It depicts a battle between the armies of Alexander the Great and Darius III of Persia. Alexander is posed in action with his spear, and he wears a breastplate with the head of Medusa, a famous Gorgon. This can be seen as a reference to the gorgon's magical head. He does not wear a battle helmet in the mosaic so that he could be recognized as the great conqueror.