Pasinler or Basiani (Pasinler; Φασιανοί Phasianoi; Phasiani; ბასიანი, Basiani; Բասեն, Pasen; formerly Hasankale and Hesenqele, meaning "the fortress of Hasan"), is a town in Erzurum Province, Turkey on the Aras River. It is located 40km east of the city of Erzurum and is the site of Hasankale Castle (sometimes called Pasinler Castle). It was the birthplace of the Ottoman poet Nef'i. The old name "Hasankale" could be based upon the Aq Qoyunlu ruler Uzun Hasan or upon Hasan the governor of the region in the 1330s or after Küçük Hasan, grandson of Coban, who attacked the town in 1340.
