Roman Emperor Caligula is famous in history for being downright crazy. One of his lesser known feats was that he once marched his army to the beach and declared war on Neptune, the Roman god of the sea. After fighting the water for some time, Caligula claimed victory and told his men to collect seashells as spoils of war. A lighthouse, called the Tower of Kalla, was built to commemorate the victory.
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By Photographed by: York Museums Trust Staff [CC BY-SA 4.0 (http://creativecommons.org/licenses/by-sa/4.0)], via Wikimedia Commons