Each center has a different theme on various aspects related to olive growing, such as oil production systems and evolution throughout history, qualities of olive oil and uses, olive growing systems, analysis of the olive sector and olive oil marketing system, olive tree biology, olive varieties, by-products of the olive grove and its uses, olive heritage, traditions, types and qualities of olive oils and history of the olive tree and olive oil. The one in Fuensanta de Martos is dedicated to the biology of the olive tree, olive varieties, by-products of the olive grove and the use of them.