Christopher Columbus - known as Cristóbal Colón in Spanish - landed on the island of Guanahani on October 12, 1492 - the date that is now remembered.
Columbus was born in Genoa, Italy. He was on a voyage across the Atlantic, exploring for the Spanish, when his ship first sighted Guanahani. There is still debate over where the island was, but it is widely believed to be modern day San Salvador in the Bahamas, not far from Florida.
The pan-American holiday was first named by ex-minister of Spain, Faustino Rodríguez-San Pedro, as President of the Ibero-American Union in 1913. He wanted to establish an event to help unite Spain and Latin America and celebrate the diversity of the peoples of the American continent, many of which now shared a mixture of European and indigenous blood.
Political controversy and regional historic differences meant that the day was officially recognized or adapted in different countries with different titles in the decades that followed.
In Mexico, the day was first officially commemorated in 1928, under the initiative of José Vasconcelos Calderón, a well-known Mexican writer and philosopher.
For more information about public holidays and celebrations see our Cozumel events calendar.