The Museo del Territorio "Casa Pezzolla" took its name from Dr Giacomo Pezzolla, who lived in the late 1700s and was a personal physician to the counts Acquaviva of Aragon.
The complex shows an evolution of architectural culture. In this group of buildings, there are two types: one of recent construction, developed on two floors, with a high and narrow façade surmounted by a triangular tympanum; the other, which represents the oldest part, consists of simple and small organisms, usually single-celled, equipped with those elements attributable to the trullo construction. Unlike the modern part, the walls of these areas were formed by non-square stones arranged randomly.
In 1986, the complex was purchased by the Municipality of Alberobello and, between 1993 and 1997, restored to its original state. This Museo del Territorio, consisting of 15 communicating trulli, is the only one protected by UNESCO.