Originally Masseria Spina Grande was a fortified building, with a square plan, developed on three floors, designed to defend the territory.
Over the years, the building has undergone several architectural changes that have affected the appearance of the primitive fortification giving it its current appearance of a Villa and the characteristic of "free access" to visitors.
The latest underground olive press is located within the boundary wall of Masseria Spina Grande and was used up to 35 years ago; at the entrance of the latter olive press it's placed the image of Madonna della Madia.
The rooms are large, typically asymmetric and exceptionally bright for the presence of large skylights; the equipment, which have been used for the olive oil extraction, is still in place and gives the olive press an aspect between the archaic and the modern.
Inside the walls of Spina Grande there's another smaller cave, which was originally used as a "millstone", later became shutdown bathtub and lime storage.