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Dadastana (Ancient Greek: Δαδάστανα) was an inland town of ancient Bithynia.[1] The Tabula Peutingeriana places it on a road from Nicaea to Juliopolis, and 29 M. P. from Juliopolis. It appears to have been near the borders of Bithynia and Galatia, as Ammianus says.[2] The emperor Jovianus on his return from the East came from Ancyra to Dadastana, where he died suddenly.

Its site is located near Karahisar, Asiatic Turkey.[3][4]


  1. ^ Ptolemy. The Geography. Vol. 5.1.
  2. ^ Ammianus Marcellinus. Res Gestae - The Later Roman Empire (AD 354–378). Vol. 25.10.
  3. ^ Richard Talbert, ed. (2000). Barrington Atlas of the Greek and Roman World. Princeton University Press. p. 86, and directory notes accompanying.
  4. ^ Lund University. Digital Atlas of the Roman Empire.

 This article incorporates text from a publication now in the public domainSmith, William, ed. (1854–1857). "Dadastana". Dictionary of Greek and Roman Geography. London: John Murray.

Coordinates: 40°11′46″N 31°06′34″E / 40.195974°N 31.109549°E / 40.195974; 31.109549