It was built in the 1450's and continually improved. It is referenced to be of Rennaissance, but the front has Gothic features. The altar was completed in mid 1500's. There are many chapels on both side going toward the altar. The ceilings are vaulted and colorful surroundings inside of pinkish, red/white motif. Palladio designed the dome in 1574, and proudly features elegance inside.
The Duomo was carefully reconstructed after heavy bomb damabe during WWII. The church is somewhat underwhelming, though the Dome is a design by yes, Palladio. This is probably the most interesting aspect of the Duomo. 2nd photo shows the dome.
Presbytery and dome of duomo. The dome was designed and added by Palladio in 1574. The small columned dome atop the main dome is characteristic of Palladian domes. The Presbytery is itself an architectural gem that has a much more modern appearance than its Renaissance age suggests. The structure is very tall as indicated by the relative height of the people in the photo.
Another creation of Palladio is shown in the right foreground.
Shown here is the facade of the duomo ( cathedral ) which was completed in about 1450. The facade is primarily Renaissance, although the arches are distinctly Gothic, and the double arched windows are Romanesque. You can see the Presbytery with its Palladian dome. These were added much later. It is evident that this magnificent duomo took centuries to build. The facade is made from pink and white marble blocks shaped in a most interesting pattern. The facade and duomo are enormous. The close proximity of other buildings make it nearly impossible to get a good ground level photo of the facade without a wide angle lens.
The duomo interior is impressive with masterfully carved marble abounding. Unfortunately my photos left much to be desired.