According to this article in the Guardian, Marlene Dietrich helped to raise funds for the development of a block of flats in Berlin's Tiergarten. The building was designed by Walter Gropius. When the Berlin Senate had problems finding funding for their proposed development, they put through a call to Dietrich, living in the US. The star apparently made some calls to Wall Street bankers and within two days, funding was secured.
Las Vegas' famed Sahara Hotel, where Marlene famously made her cabaret debut in 1953, is to close on 16 May. The hotel opened in 1952. Mae West and her muscle men performed there in 1954. It was also the setting of the original Oceans Eleven, starring Frank Sinatra.