Trullo di Marziolla sits in the countryside outside Locorotondo and is one of the most important small buildings in the Valle d'Itria. Its dry-stone cone and thick walls show the trullo form in a practical agricultural setting, away from the more theatrical concentration at Alberobello.
The visit is quick, but worthwhile if you have a car or bicycle. It helps restore the trullo to its original world of vines, fields, stone walls, and hard rural work rather than treating it as a novelty roof shape.