Sighişoara is a city and municipality in Mureş County, Romania.Sighișoara (Romanian pronunciation: ; German: Schäßburg; Hungarian: Segesvár, Hungarian pronunciation: ( listen); Latin: Castrum Sex) is a city on the Târnava Mare River in Mureș County, Romania. Located in the historic region of Transylvania, Sighișoara has a population of 28,102 according to the 2011 census.