Flag Sticker Thuringia region, Germany. Its capital is Erfurt. Named for the tribe of the Thuringians (Thuringii) who occupied the region around the year 300, Thuringia became Frankish domination in the sixth century. Thuringia became landgraviato in the year 1130. After the war of the succession of Thuringia (1247-1264), the western half became independent.