This cathedral is dedicated to St. Sabino, bishop of Canosa during the V century, and was erected around 1080. It was mostly redesigned following the earthquake of 1689 and during the first decades of the nineteenth century, which saw the lengthening of the pediment and a new facade added. Inside, in a Latin cross design with three aisles, the cathedral greatly changed during its nineteenth century extension, as seen from the first three arches. The ancient church, dating back to the first period of Romanesque architecture in Puglia, was inspired by Byzantine and Eastern architecture and includes the last two vast bays of the aisles, the transept and the main apse. It has five groined domes, two on the central nave, one in the middle of the transept and one for each wing of the transept. The pulpit is located in the last aisle bay on the left. It dates back to the first half of the XI century and is the work of the archdeacon Acceptus. The centre of the semi-circular apse hosts the Episcopal chair by the sculptor Romualdo who designed it for Ursone, the bishop of Bari and Canosa from 1079 to 1089.