The Ides of March is one of the most famous Roman holidays, celebrated on the 15th day of March. It was originally a religious festival to honor the god Mars, but it later became associated with Julius Caesar's assassination in 44 BC. The Ides of March is still celebrated today as a reminder of the importance of democracy and freedom. Other Roman holidays include Saturnalia, which was a winter solstice celebration honoring the god Saturn, and Lupercalia, a fertility festival held in February.