English summaries description by the castellan Johann Christoph Kurz (1757), followed by the revised version produced by Anton Focke, and continuing with the guides to the Wartburg written by Johann Salomo Thon, which were published in four editions between 1792 and 1826 and which each contained different pictures and ground plans of the castle. Further depictions were created by Christian Got- thilf Salzmann (1787), Johann Gottlieb Kreußler (1818) and numerous artists and engravers such as Gustav Georg Endtner, Heinrich Hose, Ludwig Heß, Friedrich Roßmäßler and others. The essay shows that the changing illustrations not only reflected architectural changes but also serve to document changing perceptions of the castle and of its historical importance. As a result of its dis- semination in print, the image of the Wartburg was imprinted in the collective memory, paving the way for the restoration movement of the 19th century. Simon Paulus/Markus Jager The Albrecht Haupt collection in Hano- ver: source material for research into castles and stately homes The essay on the Albrecht Haupt collection in Han- over, which has hitherto remained relatively unknown, looks at the extensive collection assem- bled by the architect and architectural historian Karl Albrecht Haupt (1852–1932). Haupt, who is known for his research into Renaissance architec- ture in Spain, Portugal and Germany, left behind a major collection of historical specialist literature, prints and drawings. The collection, which was acquired by the Royal College in Hanover in 1901, comprises more than 6 000 sheets, including trav- el sketches, historical drawings and plans dating from between 1500 and 1900. Since 2023, the col- lection has been accessible electronically via an online portal. As part of a project sponsored by the DFG (German Research Foundation), the collection has been systematically studied, with a focus on architecture-related drawings. It contains works by famous artists and architects from the Ger- man-speaking and Italian regions and designs from the former areas of Swedish rule. Particular men- tion should be made of Haupt’s own travel sketch- es, which he made between 1865 and 1920 and which include more than 400 drawings of castles and stately homes. These sketches provide docu- mentary evidence of architectural details, parts of buildings and interiors, particularly from the Renaissance. Haupt’s interest in these buildings is reflected in his specialisation in the architecture of that period. Haupt’s collection is not only an important source for research into castles and stately homes but also affords unique insight into the thinking of a middle-class preservationist and architectural historian at the turn of the 19th/20th centuries. Alexander Wiesneth King Ludwig’s castles finally gain world heritage status On 12 July 2025, the UNESCO World Heritage Com- mittee added the royal palaces of King Ludwig II of Bavaria – Neuschwanstein, Linderhof with Schachen, and Herrenchiemsee New Palace – to UNESCO’s World Heritage list. This recognition came after a nomination process spread over many years and involving a great deal of effort, which began as long ago as the 1990s. The palaces represent a late romantic historicist conception of architecture which has no parallel anywhere in the world, and are pre-eminent cultural phenom- ena of the 19th century as Gesamtkunstwerke bringing together art, architecture and innovative technology. They are distinguished by their excep- tional engineering and their combination of land- scape and architecture, which reflected a longing for past times and remote places. The world her- itage listing acknowledges the cultural signifi- cance of these buildings and the man who created them, King Ludwig II, as well as underlining their uniqueness. 256 Burgen und Schlösser 4/2025