Columbus departs from Palos de la Frontera on his first Atlantic voyage, financed and authorized by Isabella and Ferdinand.
On 3 August 1492, Christopher Columbus set sail from the port of Palos de la Frontera in Andalusia with three ships, the Santa María, the Pinta, and the Niña, embarking on the voyage authorized under the Capitulations of Santa Fe signed with Isabella and Ferdinand less than four months earlier.
The departure marked the culmination of years of negotiation and Isabella's decisive royal backing for an expedition that most contemporary experts considered risky or based on flawed geographic assumptions about the size of the globe. Isabella's willingness to commission the voyage, drawing on crown treasury resources freed up after the conclusion of the Granada War, reflected both her appetite for strategic gambles and her ambition to expand Castilian influence and compete with Portugal's advances in Atlantic and African exploration.
This departure set in motion one of the most transformative journeys in human history. Within months, it would result in sustained European awareness of a hitherto unknown hemisphere, opening the era of transatlantic contact, conquest, and colonization. Isabella's sponsorship of this voyage remains her most globally significant legacy, fundamentally reshaping the modern world's political, demographic, and economic trajectory, for both its extraordinary achievements and its devastating consequences for indigenous peoples.