Parts of Diocletian's Palace

How this list was compiled: Read 2026-10-03; a name is kept only where two independent sources use it. (1) Wikipedia, Diocletian's Palace, text only (an ancient Roman palace and fortress in Split, Croatia, built as the third century AD ended as the emperor's retirement residence; an irregular rectangle of about 215 by 175 to 182 meters with sixteen towers, four of them on the corners and six of them octagonal beside the three land gates; the Golden Gate on the north toward Salona, the Silver Gate on the east, the Iron Gate on the west and the smaller Bronze or sea gate on the south; the decumanus linking the eastern and western gates; the cardo from the Golden Gate to the Peristyle; the northern half thought to house soldiers and servants; the Peristyle, a monumental court before the Vestibule; the mausoleum on its east, today the Cathedral of Saint Domnius; the temple of Jupiter on its west, later a baptistery; the Vestibule, a rotunda; the emperor's apartments along the sea front with the cryptoporticus along the southern facade; the cellars below them; a World Heritage Site since 1979). (2) The tourist board of the city of Split, its page on the palace and its pages on each part (a rectangle of about 215 by 180 meters with four big corner towers and a gate on each side; a luxury villa joined to a Roman military camp, divided in four by two main streets; the southern part for the emperor's apartment, the northern for the guard, servants and storage; the Golden, Silver, Iron and Brass Gates with their Roman names; octagonal towers on each side of a gate; Cardo street from the Peristyle toward Salona; the main street, decumanus, from the Silver Gate to the Iron Gate; the Peristyle as the central square; the octagonal mausoleum, now the cathedral; the rectangular Temple of Jupiter with a six-column porch, later a baptistery; the Vestibule, rectangular outside and circular inside, used to enter the residential part; the Cryptoporticus; the Substructures that held up the emperor's chambers and repeat their layout). (3) T. G. Jackson, Dalmatia, the Quarnero and Istria, volume 2, 1887, public domain, chapter XI (the crypto-porticus, an open cloistered walk along the whole width of the sea front; the building that is now the cathedral is an octagon outside; Jackson, as writers of his day did, calls it a temple). It is the second source for the cryptoporticus, because Wikipedia's one sentence on it cites the tourist board's page, and for the eight sides of the mausoleum, which Wikipedia's article does not give. Licence: own work

The drawing: Drawn for this site on 2026-10-03 from plain geometry; nothing traced. A diagram, not a survey. Licence: own work