The explorer Christopher Columbus made four trips across the Atlantic Ocean from Spain: in 1492, 1493, 1498 and 1502. He was determined to find a direct water route west from Europe to Asia, but he never did. Instead, he stumbled upon the Americas. Though he did not really “discover” the New World—millions of people already lived there—his journeys marked the beginning of centuries of exploration and colonization of North and South America.