[FREYBURG AN DER UNSTRUTJ, a town of Germany, in Prussian Saxony, in an undulating vine-clad country on the Unstrut, 6 m. N. from Naumberg-on-the-Saale, on the railway to Artern. Pop. 3200. It has a parish church, a mixture of Gothic and Romanesque architecture, with a handsome tower. It is, however, as being the "Mecca" of the German gymnastic societies that Freyburg is best known. Here Friedrich Ludwig Jahn (1778-1852), the father of German gymnastic exercises, lies buried. Over his grave is built the Turnhalle, with a statue of the "master," while hard by it the Jahn Museum in Romanesque style, erected in 1903. Freyburg produces sparkling wine of good quality and has some other small manufactures. On a hill commanding the town is the castle of Neuenburg; built originally in 1062 by Louis the Leaper, count in Thuringia, but in its present form mainly the work of the dukes of Saxe-Weissenfels.