Sepia photo postcard of the Muschel-Saal (Shell Hall) at Weinhaus Rheingold on Potsdamer Platz, Berlin — a breathtaking dining room of Moorish-arched vaults covered in mosaic tile, electric globe lights glowing from the arches, white-clothed tables set in formal rows stretching toward a distant vanishing point. The Weinhaus Rheingold, opened in 1907 and designed by Bruno Schmitz, was one of the most ambitious restaurant buildings in the history of Berlin — a vast Art Nouveau complex capable of seating 6,000 diners across multiple themed halls, the Muschel-Saal being its most photographed interior. It was destroyed in World War II. This card was posted from the Baltic resort of Heringsdorf in June 1908, sent to a Madame in Marseille with a long German message — someone writing from a summer holiday to a French correspondent, the Rheingold card chosen as a souvenir of Berlin's grandeur.

• Caption: Weinhaus "Rheingold" — Berlin, am Potsdamer Platz — Muschel-Saal.
• Publisher: Franz Kulleich Phot., Berlin / Heliotint M.R. & Co.
• Postmark: Heringsdorf, June 27, 1908
• Status: Posted