The Harry and Penelope Seidler House is a heritage-listed modernist house located at 13 Kalang Avenue in the Sydney suburb of Killara in the Ku-ring-gai Council local government area of New South Wales, Australia. It was designed by architects Penelope and Harry Seidler and Harry Seidler & Associates, and built from 1966 to 1967 by Peter Cussel. It was added to the New South Wales State Heritage Register on 20 June 2008. History Harry Seidler Harry Seidler (25/06/1923 - 9/03/2006) was born in Vienna in 1923 into a middle-class Jewish family. The Anschluss terminated Seidler's schooling and influenced Seidler's parents Max Seidler and Rose Seidler (née Schwarz) to send their youngest son on a student visa to England where he joined his brother Marcell. On 12 May 1940, he and his older brother were interned as "enemy aliens" - first at Bury St Edmonds, then Liverpool, the Isle of Man (where he turned 17), and Quebec in Canada. Seidler's diaries record the humiliation and discomfort of internment and the fact that he and his brother were interned alongside Nazi prisoners of war. Seidler's parents managed to follow their sons to England thus escaping the destruction of European Jewry by the Nazis. They eventually migrated to Australia where the family's only known relatives outside Austria, the Hermans had moved in the 1920s and established Herman Plastic Mouldings. In 1938 Mr Herman sponsored Seidler's uncle Marcus to move to Australia where he set up a clothing manufacturing business in Sydney. This business established the Seidler family in Sydney. In 1941 Seidler was released to study at the University of Manitoba where he obtained a Bachelor of Architecture degree with first class honours. After a year of architectural work in Canada he won a scholarship to the Harvard School of Design where he studied under Walter Gropius, former head of Bauhaus. During this time Seidler (and his classmate Peter Oberander) worked with Alvo Aalto, in Cambridge Massachusetts, drawing up plans for Aalto's Baker Dormitory at MIT. He left Harvard's "electrifying atmosphere" with the "feeling that we were destined to play our part in transforming the visual man made world." Seidler's commitment to Modernism was reinforced by his attendance at the 1946 summer school at Black Mountain College where he studied with Josef Albers, former design teacher at the Bauhaus. In 1946-48 Seidler was chief assistant to Marcel Breuer in his New York office.