Biertan is a commune in Sibiu County, Transylvania, Romania. The commune is composed of three villages: Biertan, Copșa Mare, and R…Biertan is a commune in Sibiu County, Transylvania, Romania. The commune is composed of three villages: Biertan, Copșa Mare, and Richiș, each of which has a fortified church. Biertan is one of the most important Saxon villages with fortified churches in Transylvania, having been on the list of UNESCO World Heritage Sites since 1993. The Biertan fortified church was the seat of the Evangelical Lutheran Bishop in Transylvania between 1572 and 1867.