This document profiles several important Spanish explorers, navigators, and conquistadors from the 15th and 16th centuries. It discusses Christopher Columbus and his four voyages of exploration between 1492 and 1503. It also briefly summarizes the voyages and discoveries of Alonso de Ojeda, Vicente Yañez Pinzon, Vasco Nunez de Balboa, Juan Diaz de Solis, Ferdinand Magellan, Juan Sebastian El Cano, and Hernando de Soto.