The works for the construction of the cathedral began in 1093, incorporating a pre-existing church in the form of a Greek cross built between 1083 and 1086. The works finished toward the 1120. The Cathedral of Troy, masterpiece in the Romanesque style of the XI century, is the iconic monument par excellence of the town of Monti Dauni. On the facade stands out its particular and absolutely unusual rose to 11 spokes, oltra at a series of curious and absolutely unique allegoric sculptures, which make the Cathedral a Denso monument of symbols from strong evocative power. An example of such symbolism are the two bronze doors, the door of prosperity and freedom, work of Oderisio from Benevento, representative of leathery resistance opposed by the city of Troy during the siege moved by Ruggero II. Inside the Cathedral, characterised by three naves divided by thirteen columns marmoreee, there is a particular and equally unique asymmetric apse. Interesting wooden Crucifix (1709) by Pietro Frasa, whose Incarnate, full of suffering, dominates the high altar. The Exultet hymn are the pride of the Museum of the Treasure of the Cathedral. In the world there are only 32 copies and 3 of these are kept in Troy. This is rolls of parchment of the XI and XII century within which are condensed, thanks to a patient and superb work of writing and miniature, deep theological truth. The Exultet hymn represent the cultural acme then reached, a hymn of praise to the Risen Jesus and then an exhortation to joy. An extraordinary capitello decreed in fact the twinning of Troy with New York. The capital of the 4 races of Troy, exposed at the Museum Diocesan Ecclesiastical, has its twin at the Metropolitan Museum in New York, fruit of donation occurred in 1955 by a certain James Hyden. Dated between 1225 and 1250 approximately, the capital, in calcareous stone carved, is marked with four heads, which according to tradition would be associated with human profiles of known populations before the discovery of America (African, Asian, Arabic and European). Probably, together with the New York sister, were supporting element for a panel of the tabernacle. Interesting to note that, up until a few years ago, the targa exposed under the capital of New York stated came from Troy in Apulia. Opening hours: Monday hours 10,00 - 13,00 only school groups by appointment Tuesday and Thursday 17.30 - 20.00; Saturday hours 10,00 - 13,00.