The finest Ottoman palace in Algeria, built for the last bey of Constantine in the early 19th century. The palace is enormous — over 5,000 square metres arranged around a central garden courtyard with marble colonnades, ornate carved woodwork, and painted ceramic tiles. It was modelled on the palaces of the Bardo in Tunis rather than the Ottoman style of Algiers, giving it a distinct North African grandeur.
The interior features painted ceilings depicting Ahmed Bey's military campaigns, including naval scenes of the bey's fleet. Many of the original decorations survive despite decades of use as a French military barracks. The palace was restored in the 2000s and is now open to visitors as a museum. It is in the heart of the old city, near the Place des Martyrs.