Columbus Day, which is celebrated annually on the second Monday of October to honor the Italian explorer credited with “discovering” the Americas, has always been somewhat of a controversial holiday. That’s because while Christopher Columbus stumbled upon what we now call the Caribbean on October 12, 1492, he never set foot on the mainland – even on his subsequent three journeys. Besides, North America had already been “discovered” by the Native Americans, who had been living there for many generations.