900 Stewart Avenue (Ithaca, New York)

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900 Stewart Avenue
Carl Sagan Residence 2.jpg
General information
Architectural styleEgyptian Revival
Address900 Stewart Ave.
Town or cityIthaca, New York
Coordinates42°27′10.1″N 76°29′24.6″W / 42.452806°N 76.490167°W / 42.452806; -76.490167Coordinates: 42°27′10.1″N 76°29′24.6″W / 42.452806°N 76.490167°W / 42.452806; -76.490167
OwnerAnn Druyan

900 Stewart Avenue is a building in Ithaca, New York, noted for its unique Egyptian Revival architecture, its dramatic placement partway down a cliff, and being the residence of astronomer Carl Sagan. The building is on a ledge about 50 feet (15 m) below street level, overlooking Fall Creek and Ithaca Falls.[1][2]

One of just two Egyptian Revival buildings in Tompkins County, along with the Masonic Temple in downtown Ithaca, it is part of the Cornell Heights Historic District.[3]


900 Stewart Avenue from the road
900 Stewart Avenue from the road, August 2016
900 Stewart Avenue from across the gorge
900 Stewart Avenue from across the gorge, August 2016

The building was built as the meeting place of the Sphinx Head Society, a Cornell University secret society formed in 1890. The society had discussed building a meeting place since the early 1900s, and bought the site in 1908. At the time, the site was far away from campus, secluded by trees, and lacking neighbors across the gorge. After raising $25,000 they hired local architect J. Lakin Bainbridge, who also designed the Tompkins County Courthouse. Ground was broken in 1925, and the building was finished in 1926.[4] The design was intended to resemble an Egyptian tomb, perhaps partly as a delayed expression of the popularity of Egyptian Revival architecture in the late 1800s, perhaps partly as a resurgence in popular interest in Classical Egypt after the opening of Tutankhamun's tomb in 1922, and perhaps partly because of similar structures at Yale and Dartmouth (the Skull and Bones tomb and the Sphinx, respectively).[1]

The building only had a single door, and no windows. A journalist described the eeriness of being inside it:

The entrance through a doorway on the monumental side, flanked by ornamental stone pillars beneath Egyptian symbols on the lintel and the frieze set the stage. After walking through a small entryway between cloak and storage rooms, the initiated entered a long, lofty rectangular room, only dimly lit by a few sconces on the side walls. Wooden pews extended along the unadorned stone walls.[4]

Eventually, the tomb became less useful to the society, due to its remote location, the lack of nearby parking, and the increased property taxes and maintenance costs. In 1969, the society sold the property to the next-door neighbor, physicist Robert Wilson. He used it as a sculpture studio before selling it to architect and design professor Steve Mensch in 1979. "I'd been trying to buy it for the last eight years," Mensch told the Cornell Daily Sun:

The first thing that attracted me to the place was that it's so bizarre, it's such a fantasy structure. When I tried to change it, the impulse was to intensify the strangeness ... I loved the space. The building so contradicted the site. It was such an introverted space at such an extroverted site.[5]

Mensch undertook a substantial renovation. He cut a huge, floor-to-ceiling window in the gorge-facing side of the formerly windowless tomb. He built a one-story addition with three bedrooms just below the tomb, a glass pavilion on the same level as the tomb, and a new parking spot and building for the entry staircase. He did large parts of the construction work himself, and held his office hours on the site.[5] "One no longer has the sense of entering an ancient, shadowy, secret chamber in a remote location," a journalist wrote. "It's a good deal more like finding an unsuspected open-air museum set in the midst of a small but lovely park overlooking the city."[4]

Astronomer Carl Sagan bought it in 1981, on returning to Cornell from several years in Los Angeles making the documentary Cosmos.[2] He used the complex as a residence for many years, and looked for an architect to help him renovate it. Eventually, he hired Atelier Jullian and Pendleton, whose principal, Guillermo Jullian de la Fuente, had been a student of Le Corbusier. The architects designed a new, separate residence for Sagan in Cayuga Heights, and prepared an extensive, two-stage redesign plan for the tomb to turn it into a study for him and his wife, Ann Druyan. Mensch's additions were demolished, with the exception of the new entry staircase. New windows and skylights were added. On top of the tomb, a small teak penthouse was built, inspired by "images of canal barges and of boats on the lake." The renovation, which took place from 1990 to 1992, was featured in a photo spread in Architectural Digest.[6] The second phase of the renovation, which was to include a series of additional buildings terraced above and below the tomb, was never built.[1]

Sagan's biographer William Poundstone writes:

Like Sagan himself, the Sphinx House was visible and flamboyant––and also remote and unapproachable. ... Its spectacular seclusion drew looky-loos who might otherwise not have cared where Carl Sagan lived. Sagan's "Graceland" had a security system worthy of its Memphis counterpart. An iron gate slammed behind visitors. Surveillance cameras silently scanned visitors' movements. In lieu of a moat, the 200-foot plunge to the gorge acted as a guarantor of privacy.[7]

At one point, the fraternity across the gorge invited Sagan to dinner; when he declined, suspecting them of having repeatedly vandalized a visibility mirror on the house's driveway, they arranged strings of Christmas lights to project the words, "Carl Sagan Sucks!" across the gorge at him,[7] although other accounts suggest the sign actually read "E-A-T M-E."[8][9] A popular (and inaccurate) local rumor was that there was a secret tunnel between the house and Cornell, so that Sagan could drive his Porsche to campus unmolested.[10][7]

After Sagan's death, his papers remained in the building until being transferred to the Library of Congress in 2012.[11][12]

Writing for New York magazine in 2014, Sagan's daughter described the house as "like something straight out of ancient Sumeria, or Indiana Jones—but it was not, in either case, something you'd expect to find in upstate New York."[12]

As of 2016, the building is still owned by his widow, Ann Druyan, and is assessed at $475,000.[13]


  1. ^ a b c Lifton, Zachary (April 2010). From Egyptian tomb to postmodern temple: An examination of the architecture of interaction and effect of view at 900 Stewart Avenue, Ithaca, New York (Paper written for American Architecture II). Columbia University Graduate School of Architecture, Planning and Preservation. Retrieved August 17, 2016.
  2. ^ a b Dear Uncle Ezra, archived from the original on June 6, 2013, retrieved August 16, 2016
  3. ^ "Historic Districts". City of Ithaca. Retrieved August 24, 2016.
  4. ^ a b c Kretzmann, Barbara (March 1981). "Tomb With a View". Cornell Alumni News. Ithaca, New York.
  5. ^ a b Moudry, Roberta (September 27, 1979). "An Egyptian Temple Reborn". Cornell Daily Sun.
  6. ^ Viladas, Pilar (July 1994). "Of Architecture and Astronomy: Capturing the Sky in Carl Sagan's Ithaca, New York, Study". Architectural Digest.
  7. ^ a b c Poundstone, William (1999). Carl Sagan: A Life in the Cosmos. New York City: Henry Holt. pp. 280–81. ISBN 978-0805057669.
  8. ^ Bond, Alexandra. "Riddle of the Sphinx: Carl Sagan's former home remains an intriguing local landmark". Cornell Alumni Magazine. Cornell Alumni Association. Retrieved June 21, 2021.
  9. ^ "The Riddle of the Sphinx? Rockledge Brother Al Cohen '85 Solves It". rockledge.org. Retrieved June 21, 2021.
  10. ^ Crandall, Brian (January 26, 2013). "Cornell and Carl Sagan". Ithacating in Cornell Heights. Retrieved August 18, 2016.
  11. ^ Sternberg, Bill (March 2014). "The Sagan Files". Cornell Alumni Magazine. Retrieved August 16, 2016.
  12. ^ a b Sagan, Sasha (April 15, 2014). "Lessons of Immortality and Mortality From My Father, Carl Sagan". New York Magazine. Retrieved August 26, 2016.
  13. ^ "900 Stewart Ave". ImageMate Online. Tompkins County Department of Assessment. Retrieved August 16, 2016.