At the beginning of the XV century, the Realm of Castalia commenced the conquest of the Canary Islands.

In 1402 this colonisation of the Islands also included the French Juan de Bethencourt and Gadifer de la Salle. Among the crew were the French priests Pedro Bontier and Jean Le Verrier who together wrote the first chronicles on the Canary Islands conquest and titled it Le Canarien.

The island of Lanzarote was first conquered in 1402, later on, in 1478 the Castilians conquered Fuerteventura, El Hierro and La Gomera, and in this same year the Catholic Kings ordered the Adelantado Alonso Fernández de Lugo to continue with the conquest of the Islands.

In 1478, after a heroic resistance, the conquest of Gran Canaria was achieved, while in 1493 after fierce battles, La Palma was conquered also. In 1494, the Castilians decide to conquer Tenerife. In the struggles fought out during the conquest, the most notable were the Battle of Acentejo (Batalla de Acentejo), which was the first battle lost by the Spanish Army to the Guanches. The village where this battle raged is known as the Slaughter of Acentejo (Matanza de Acentejo).

The final battle of victory, in which the conquerors defeated the Guanches, took place in a village named La Victoria, and to remember their victory the conqueror planted a pine tree that exists to this day.

After two years of intense struggle, Tenerife surrendered in 1496, and the place where the warriors (menceyatos de guerra) surrendered was in Los Realejos. The conquest of the Canary Islands finally ended in 1497.