Trulli di Alberobello – Rioni Monti e Aia Piccola

Alberobello's World Heritage is not a single monument but two whole quarters of dry-stone dwellings: Rione Monti, with 1,030 trulli tumbling down a southern hillside, and Rione Aia Piccola, 590 cones where families still live as they always have. Together they form the most complete surviving trullo townscape in Puglia.

Why it matters

In 1996 UNESCO inscribed the trulli of Alberobello on the World Heritage List under criteria (iii), (iv) and (v), recognising them as an exceptional survival of a prehistoric building tradition still in use and as the outstanding, most intact example of a trullo settlement in the Mediterranean. The inscribed property covers about eleven hectares across six parcels: the two districts, plus four defined points including the Trullo Sovrano. Unlike most heritage sites of this kind, the trulli districts are neither ruins nor a museum set — the cones are inhabited, whitewashed and repaired with the same corbelled technique their builders used centuries ago, which is precisely why UNESCO treats the area as a living historic urban landscape.

What to notice

Look closely at how a trullo is put together. The walls are built in two skins of limestone blocks with rubble packed between, laid without mortar; the conical roof rises by corbelling courses of grey stone slabs, the chianche on the lower slope and smaller chiancarelle above. Many cones end in a white pinnacle, and some carry whitewashed symbols drawn in ash. UNESCO also notes the cisterns dug beneath the dwellings to collect rainwater — the reason a town could grow on waterless Murgia plateau land. In Rione Monti, read the street plates: every lane is named for a mountain where Italy fought during the First World War, from Monte San Michele to Monte Pertica. In Aia Piccola, the reward is different — domestic details, bougainvillea against whitewash, and the Piazza 27 Maggio, where an old threshing floor once collected the tithes owed to the feudal lord.

Context and history

Settlement in the area is recorded from around the year 1000, and in the mid-fourteenth century the territory was granted by Robert of Anjou, Prince of Taranto, to the first Count of Conversano. Under the Acquaviva counts, building in the woods was tightly controlled, and by the mid-sixteenth century about forty trulli stood in what is now Rione Monti. In 1620 the count's steward Gian Girolamo Guercio ordered a bakery, a mill and an inn here. By the end of the eighteenth century some 3,500 people lived in trulli, and in May 1797 the parish priest obtained from King Ferdinand IV an end to feudal rule: the community became a royal town, named Alberobello after the ancient oak wood the Latins called Silva Arboris Belli, and trullo construction went into decline. Italy protected the quarters as monuments during the twentieth century — Rione Monti in 1928, Rione Aia Piccola in 1936 — before the 1996 inscription. Today Monti's lanes are given over to visitor trade, while Aia Piccola remains predominantly residential, a balance UNESCO's conservation reporting keeps under review.