Quedlinburg, a town of Prussia, in the province of Saxony, beautifully situated near the lower Hartz mountains, on the Bode, a tributary of the Saale, 31 m. S. W. of Magdeburg; pop. in 1871, 16,402. Two arms of the Bode divide the old from the new town, and there are four suburbs, one laid out in 1862. The castle, on a rocky eminence, once the residence of the local abbesses, is in decay, and is partly used as a school. The Schlosskirche, with remarkable art treasures, was made in 1838 the theme of a special work by Ranke and Kugler. There are seven Protestant churches, and one Catholic. A gymnasium was established here by Luther and Melanchthon. The ruined convent of St. Wipertus is now a barn. In the Brühl garden are monuments of Klopstock and Carl Ritter, who were born here. Qued-linburg is a market for seeds, agricultural and garden products, cattle, books, and woollen goods. The see of Quedlinburg was celebrated from the 10th to the 18th century for its abbesses, who had a seat in the diet as princesses of the German empire. The first abbess was Matilda, daughter of Otho I. (963-999). In 1539 the abbesses joined the reformation.

Conspicuous among those of the 18th century were Anne Amalia, a sister of Frederick the Great, and Sophia Albertina, a daughter of King Adolphus Frederick of Sweden, who was the last, retiring in 1802, but retaining the title till her death.