Villa Senar is an estate built in Switzerland by the Russian composer Sergei Rachmaninoff. He purchased the plot of land near Hertenstein on the shores of Lake Lucerne in 1932. The name of the estate originated from the names of Rachmaninoff and his wife: Sergei and Natalia, by combining the first two letters of each given name and the first of their surname. The architects of the very modern design were the Swiss architects Alfred Möri and Karl Friedrich Krebs.