The main campus's 24 hectare land was bought through the benevolent grant of the American industrialist and philanthropist, John D. Rockefeller, to the American Baptist Foreign Mission Society to built mission school in the Philippines. From a swampy land where the school was started in 1905, it grew to a campus housing more than thirty structures, and is a veritable community by itself surrounded by different "barrios". Several tree species such as Palm and acacia trees dots the entire main campus, a unique feature the university has.