Ducal Palace is situated on the second largest square of the town, Piazza Roma, now housing the Molitary Academy.
The palace was begun in 1635 according to the wishes of Duke Francesco I d'Este, who engaged architect Bartolomeo Avanzini for the work. For over two centuries the building was the residential palace of Este family.
The old castlebuilt by Obizzo III in 1324 was incorporated in the new building.
Despite the fact that the palace was completed over long period of time, almost three centuries, its predominantly Baroque character.