The east and north parts lie in the basin of the river Fulda, which near the north-eastern boundary joins with the Werra to form the Weser.
The chief manufacturing centres are Cassel, Diez, Eschwege, Frankfort, Fulda, Gross Almerode, Hanau and Hersfeld.
Sorau is said to have existed in 840, and to have belonged to the abbey of Fulda till the 12th century.
This Hatto built the church of St George on the island of Reichenau, was generous to the see of Mainz and to the abbeys of Fulda and Reichenau, and was a patron of the chronicler Regino, abbot of Priim.
At the same period he founded the abbey of Fulda, as a centre for German monastic culture, placing it under the Bavarian Sturm, whose biography gives us so many picturesque glimpses of the time, and making its rule stricter than the Benedictine.