The south-eastern tower is one of the four corner towers. During Diocletian’s era, it served a defensive purpose and had four storeys, unlike the two northern corner towers, which had three. It retained this form until the construction of the defensive walkway in the 15th century and is mentioned as the Archbishop’s Tower in the 1312 Statute. From the early medieval period, the first floor was adapted as the archbishop’s residence, and after a fire in the early 16th century and the relocation of the archbishopric, the tower was used as a residential space. The tower was restored in 1966, during which the Gothic pillars on the first floor were incorporated into a load-bearing ceiling structure, having previously been supported by the fill of the ground-floor space. Archaeological excavations of the ground floor began in 1969 as part of the Yugoslav-American project on Diocletian’s Palace. In 1977, the upper floors of the south-eastern tower were renovated to accommodate the offices of the Mediterranean Games Directorate in Split in 1979.