June 6, 1914|
New Haven, Connecticut
|Died||March 1, 2005
Los Angeles, California
Sinai Temple, Los Angeles, California
|Projects||Master Plan for the University of Judaism, Los Angeles, California|
Sidney Eisenshtat was born in New Haven, Connecticut, and his family later lived in Detroit, Michigan. The family moved to Los Angeles, California in 1926, reportedly in search of a less anti-Semitic atmosphere than they perceived in Detroit. He graduated from the University of Southern California architecture school in 1935. Early in his career he designed large projects for the United States Department of Defense, tract houses, and retail stores.
It was not until 1951 that he designed his first major religious structure, Temple Emanuel of Beverly Hills, California. Eight years later he designed the landmark Sinai Temple on Wilshire Boulevard in the Westwood district of Los Angeles, a building that has been compared to the work of Frank Lloyd Wright and which is distinguished by its use of stained glass windows.
Eisenshtat said that his concept of synagogue design was based on his perception that, unlike in some religions, "in Judaism there is no intermediary. Therefore, I see the structure for synagogues not as pyramidal but as horizontal." Influenced by other modernist architects, notably Erich Mendelsohn, Eisenshat was noted for a use of expressive forms in thin shell concrete, white walls, simple materials, and natural light. Two of his most representative and distinguished buildings are set in arid desert environments.
At Temple Mount Sinai in El Paso, Texas (1962) the Ark is a giant open tripod inside a soaring, tent-like concrete sanctuary; one writer has commented that this building "with its soaring arched shell seems to spring out of the rocky Texas soil" and gives the congregants a view of the mountains "through the high glazed arch behind the Ark." This building is also featured in the book American Synagogues by noted architecture critic Samuel D. Gruber, where it is described as "a dramatically sculptural building perfect for its austere setting." 
The futuristic House of the Book, built in the early 1970s as the synagogue for the Brandeis-Bardin Institute, is set among the Santa Susana Mountains near Simi Valley, California. It has been used as a filming location for science-fiction and other productions, notably including Star Trek VI: The Undiscovered Country,  as well as the Command Center for the first few seasons of the American Power Rangers television show.
Eisenshtat's design for the Hillel House at the University of Southern California was described as one of his best buildings by USC architecture professor James Steele, who said it was representative of "his personality and his attitude toward Judaism," with a building that is "very open, free, full of light," but surrounded by a "bunker"-like "defensive wall."
Eisenshtat also designed the master plan for the campus of the University of Judaism (now American Jewish University) in Bel-Air, Los Angeles, California, completed in 1977. His notable secular buildings include the Friars Club and Union Bank buildings in Beverly Hills and the Sven Lokrantz School for disabled children in Reseda.
For many years during the 1950s, 1960s, and 1970s, Eisenshtat's lead designer was Maxwell Rex Raymer (June 4, 1922 – February 27, 2010).
An observant Orthodox Jew, Eisenshtat reportedly did not accept fees for his synagogue projects. He was honored as a Fellow of the American Institute of Architects in 1986. He died in 2005 at age 90. His papers are collected at USC's architecture library. In 2012, USC's Architectural Guild Press published a monograph about Eisenshtat's work, edited by USC professor James Steele.
- Temple Emanuel, Beverly Hills, California (1951, opened 1953, remodeled 2011 by Rios Clementi Hale Studios)
- Sinai Temple, Westwood, Los Angeles, California (1960)
- Friars Club of Beverly Hills, Beverly Hills, California (1961) (demolished 2011)
- Temple Mount Sinai, El Paso, Texas (1962)
- House of the Book, Brandeis-Bardin Institute, Simi Valley, California (c. 1970)
- Hillel House, University of Southern California, Los Angeles, California
- Knox Presbyterian Church, Los Angeles, California 
- ”Obituaries: United States,” American Jewish Yearbook, 2006, pp. 712–13 (New York: The American Jewish Committee, 2006).
- Christina Huh, "Alumnus, famed architect dies at 90," Daily Trojan, March 22, 2005.
- Mary Rourke, “Sidney Eisenshtat, 90; Was Known for His Innovative Synagogues,” Los Angeles Times, March 05, 2005.
- Samuel D. Gruber, "Sidney Eisenshtat, 90, Leading Synagogue Architect", Forward, April 1, 2005.
- David Gebhard and Robert Winter, An Architectural Guidebook to Los Angeles (Gibbs Smith, rev. ed. 2003), ISBN 978-1-58685-308-2, p. 143 (excerpt available at Google Books).
- Evelyn DeWolfe, "AIA Honors Five Southland Architects", Los Angeles Times, April 13, 1986.
- Brian de Breffny, The Synagogue (Macmillan, 1st American ed., 1978), ISBN 0-02-530310-4, p.200
- News release for Samuel D. Gruber, American Synagogues: A Century of Architecture and Jewish Community (Rizzoli, 2003), ISBN 978-0-8478-2549-3.
- "Cathedrals in the Clouds," Time, December 27, 1971.
- Harry Medved, "Top Ten Jewish silver screen landmarks," The Jewish Journal of Greater Los Angeles, November 9, 2006.
- "The Brandeis-Bardin Campus Filming Locations" at American Jewish University official website.
- Dennis McCarthy, "Beauty above and beyond the surface", Los Angeles Daily News, September 4, 2011 – via HighBeam Research (subscription required).
- Dana Bartholemew, ""One Cool Tour: Sleek And Modern, Valley's Post-War Structures Fascinate." Los Angeles Daily News, November 12, 2000 – via HighBeam Research (subscription required).
- Dan Knapp, "Eisenshtat Papers Trace the History of Sinai Temple", USC News, September 8, 2011.
- James Steele, ed., Sidney Eisenshtat, Volume 3 of Monographs (USC Architectural Guild Press, 2012), ISBN 978-0615504513.
- USC Architectural Guild Press official website(retrieved October 5, 2008).
- "University of Southern California" (faculty news) at Association of Collegiate Schools of Architecture website (retrieved November 9, 2011).
- Chris Nichols, "Chris’s Picks: 10 Great New L.A. Books", Los Angeles, December 29, 2013.
- Mayer Rus, "Back to Shul", Los Angeles Times Magazine, December 4, 2011, pp. 46-53.
- "Goodbye to Another LA Landmark", KCRW, January 27, 2011.
- Martha Groves, "Building that once housed the famed Beverly Hills Friars Club is being razed", Los Angeles Times, January 28, 2011.
- "Worship Spaces" at Temple Mount Sinai website
- House of the Book, American Jewish University website
- "Who We Are", Knox Presbyterian Church, Archived June 16, 2006, at the Wayback Machine.