 Humboldt is considered to be the "second discoverer of Cuba" due to the scientific and social research he conducted on this Spanish colony.During an initial three-month stay at Havana, his first tasks were to properly survey that city and the nearby towns of Guanabacoa, Regla, and Bejucal.He befriended Cuban landowner and thinker Francisco de Arango y Parreño; together they visited the area in south Havana, the valleys of Matanzas Province, and the Valley of the Sugar Mills in Trinidad.