KW2973646: Olympia, Peloponnese, Greece. Ancient Olympia. The Philippeion, 4th century BC. Closeup of columns and capitals of a circular building of the Ionic order, donated by Philip II of Macedon after the battle of Chaeronea. The building was completed by his son, Alexander the Great. Ancient Olympia is a UNESCO World Heritage Site. (photo) / Bridgeman Images