Tismana is a town in Gorj County, Oltenia, Romania. It administers ten villages: Celei, Costeni, Gornovița, Isvarna, Pocruia, Racoți, Sohodol…Tismana is a town in Gorj County, Oltenia, Romania. It administers ten villages: Celei, Costeni, Gornovița, Isvarna, Pocruia, Racoți, Sohodol, Topești, Vâlcele, and Vânăta. During the Byzantine period, Tismana was a major center of hesychasm when Nicodemus of Tismana built a monastery in Tismana during the 1300s.