in the Renaissance style in 1613 by Paul Francke. The castle's tallest tower, it still stands today. Duke Augustus moved to the castle in 1642 and between 1641 and 1643 also granted Conrad Buno a room there; Buno created several copperplate images of the castle. It was damaged during the Thirty Years' War. Between 1690 and 1697 the castle underwent a major renovation during which its great halls were converted into residential chambers for the dukes. Between 1714 and 1716 architect Hermann Korb added a new Baroque timber-framed facade to the castle. The stone entrance gate and the sculptures by Austrian Franz Finck on the bridge and along the moat all also date to this period. The sculptures embody the dukes' virtues and duties. Later life The ducal court relocated to Brunswick in 1753, leaving the castle empty. When Gotthold Ephraim Lessing was appointed librarian at the nearby Herzog August Library in 1770, the Duke assigned him some rooms on the first floor of the castle. Lessing spent five years in them but, After marrying Eva König in 1776, he moved with his wife into the Meißnerhaus next door to the castle, before moving in 1777 to the Schäffersche Haus, later known as Lessinghaus. During this period he wrote Emilia Galotti (1772) and Nathan the Wise (1779). A girls' school, the Anna-Vorwerk-Schule, was founded in the castle buildings in 1866. 20th and 21st centuries Today part of the castle is a museum preserving the state apartments and reception rooms from 1690 to 1740 in their original state and exhibiting many paintings and furniture, most on loan from Prince Ernst August of Hanover. There is also an exhibition of upper- and middle-class objects from 1700 to the present day. In 1969 the Gymnasium im Schloss (GiS) was founded in the castle buildings. The school's language laboratory and the Hausmannsturm were damaged by fire and so were restored as part of the museum. Since 1991 the castle has also housed the administration buildings of the Bundesakademie für kulturelle Bildung Wolfenbüttel, whilst the amateur theatre group "kleine bühne Wolfenbüttel e.V." puts on shows in the castle courtyards during the town's annual KulturSommer summer festival. That festival also includes concerts by the Posaunenchor Wolfenbüttel brass band in the Hausmannsturm, featuring music by Praetorius and other composers. Four times a year the courtyards also host the Die Wolfenbüttler eV, who re-enact the Baroque changing of