In 1953 Dr Friedrich Unger sold his shares and the name Kempinski to the ‘Hotelbetriebs-Aktiengesellschaft‘, which already ran hotels such as the Baltic, the Bristol and the Kaiserhof. The name Bristol was adopted and still graces the Kempinski Hotel at 27 Kurfürstendamm. In subsequent years, the “Hotelbetriebs-Aktiengesellschaft” took over the management of several famous hotels. In 1957 it acquired the luxurious Hotel Atlantic in Hamburg. This elegant hotel, known as the “Weisses Schloss” (or White Castle), was opened in 1909 and was a recognized Hamburg institution even then.