rofessional engineers and others can have some wonderful arguments about just what the most amazing engineering feat is in world history. Certainly the pyramids come to mind. Similarly, buildings and monuments like Stonehenge and the Roman Colosseum ought to be up there on any list. But two more modern engineering feats that could vie for best in the world are the Suez Canal and the Panama Canal. And as luck would have it, the United States Mint commemorated the opening of that final one in 1915, with four rather amazing coins. For different reasons, though, this quartet often ends up being overlooked,
