Andrew Carnegie, born in Scotland in 1835, immigrated to the U.S. as a child. During the late 19th century, he founded the
Carnegie Steel Company, which became one of the largest American steel companies. Carnegie had shared a hotel suite with his mother until he married Louise Whitfield at the age of 51; they then lived near Fifth Avenue and 51st Street in
Midtown Manhattan. The family stayed at their house in Scotland, the
Skibo Castle, during the summer. Carnegie had been happy with the 51st Street house, which had been a wedding gift for Louise, and their daughter Margaret was born there in 1897. Carnegie Hill had retained a somewhat rural character until the 1880s, when brownstone row houses were built there, Real-estate agent
Lawrence B. Elliman obtained options for land on both Fifth Avenue and
Riverside Drive; at the time, many of the city's wealthiest people lived on Riverside Drive.
Land acquisition In December 1898, Carnegie bought all of the lots on Fifth Avenue between 90th and 92nd streets for about $900,000, a rate of about . The acquisition, which Butler and an associate had arranged in secrecy, At the time, the site was about 20 blocks away from any other mansion on Fifth Avenue. while the author Michael Kathrens says that Carnegie had wanted the site because his doctor had advised him to seek "the park and sunshine" for his daughter. He ultimately decided to erect his mansion on the southern plot. Carnegie also acquired several houses on the south side of 91st Street, which he rented exclusively to his friends, such as
Carl Schurz. Carnegie retained ownership of several lots to protect his home's value. He did sell off parcels over the years, but only to "congenial neighbors", Carnegie sold four land lots on 91st Street to the businessman
William Douglas Sloane in December 1900, After Sloane and Carnegie swapped additional land in 1901, Another industrialist, James Burden's uncle
I. Townsend Burden, bought the site at the southwest corner of 92nd Street and Fifth Avenue in December 1902. Carnegie sold a parcel east of Hammond's house in 1909, which became the home of the lawyer
John B. Trevor, and he sold the corner of Fifth Avenue and 91st Street to the banker
Otto H. Kahn in 1913. Carnegie sold off the last of his holdings on the northern block in 1916. Although Carnegie was wealthy enough to buy almost all the other lots directly surrounding the house, he never bought the lots at 14–18 East 90th Street to the south; the reason for this is not known. Carnegie was also initially unable to buy the sites at 9 and
11 East 90th Street, although these lots were both later connected to the mansion; The adjacent building at 11 East 90th Street housed George's brother William W. McAlpin.
Design and construction During 1898, Carnegie's private secretary visited houses in other countries to determine what features to include in Carnegie's proposed mansion. Carnegie stated that he did not want "a grand palace", but rather "the most modest, plainest and most roomy house in New York". In contrast to Babb, Cook & Willard's Georgian design, Hardenbergh had drawn up a
Châteauesque design, while Howard, Cauldwell & Morgan had devised an
American colonial design. Carnegie was about to construct his mansion and garden by June 1899, The plans called for a four-story
Dutch Colonial-style structure on 91st Street with an eastern wing and a terraced garden. Several contractors submitted bids to build the house, and Charles T. Wills received the general contract in January 1900. A model of the mansion was displayed at the
Architectural League of New York the same year. having added a "winter garden", playroom, and nursery for her only child. He also contemplated erecting a marble wall to the east, blocking views from
Madison Avenue. Carnegie requested numerous revisions to the design, causing disputes between him and the architects, which Butler had to mediate. The organ was initially supposed to cost $16,000, but this price increased after Carnegie requested several alterations to the organ, including changes to its bass register. In April 1901, the New York Large Tree Company began delivering around 30 mature trees to the site, some measuring up to tall and in diameter. By then, the house was nearly completed and was surrounded by a wooden construction fence. Trees were delivered from
Westchester County, New York, via a custom-made wagon pulled by six horses. One newspaper wrote that the trees were intended to block views of a nearby tavern from the house. When the mansion was nearing completion in mid-1902, two hundred and fifty workers went on strike to protest low wages; the strike was resolved after less than a week. The mansion's cost was estimated at $1.5 million ()
Carnegie use The Carnegies moved into the house on December 12, 1902, having arrived on an ocean liner from the Skibo Castle. Louise's sister
Stella Whitfield, who had lived with the couple since 1890, also moved into the house, living there until the 1910s. The Carnegies hosted their first event at the mansion, a housewarming party, the week after they moved in. The mansion did not include a garage, so Carnegie built a five-story, brick-and-marble parking garage nearby in 1905; that structure had space for five cars and also housed several servants. In contrast to other houses on Fifth Avenue, the Carnegie Mansion was never popular as a site for social events. In general, the Carnegie family stayed in the mansion from October to May. Carnegie typically spent his mornings working in the library and exercising; after an afternoon nap and a walk around Central Park, he hosted business visitors. Like other
Gilded Age mansions, the Carnegie Mansion had numerous butlers, housekeepers, cooks, engineers, and garage workers; the Carnegies also had their own security force and secretaries. The mechanical systems alone were managed by a master engineer, three assistant engineers, and nine helpers. as well as piper Angus MacPherson. Unlike other wealthy New Yorkers, Carnegie did not mingle with high society; their own 25th anniversary in 1912, Margaret's debutante ball in 1916, and annual reunions of Carnegie's business partners. Musical performances often took place in the main hall, Despite
the large number of libraries that Carnegie had funded worldwide, he seldom used his personal library in the mansion; he also spent relatively little on art and largely decorated the picture room with paintings by living artists. Carnegie began allowing local children to play in the mansion's garden in 1911, and Louise's brother
Henry D. Whitfield designed a passageway between the house's conservatory and picture gallery in 1913. Carnegie bought a wooden shack on the southeast corner of Fifth Avenue and 90th Street in 1917 to prevent an apartment building from being erected there. Following the onset of World War I, the Carnegies stopped traveling to the Skibo Castle during the summers. The family instead obtained a summer house in
Massachusetts; they continued to use the New York City mansion during the winter. Margaret Carnegie married Roswell Miller at the mansion in 1919, and Andrew Carnegie died later the same year.
1920s to 1940s Following Carnegie's death, the mansion was valued at $977,833 (). Louise Carnegie bought George McAlpin's house at 9 East 90th Street for her daughter and son-in-law for $250,000 in May 1920, and the house was renovated for the Millers at the end of 1920. The Millers furnished their house with some of the furniture from the Carnegies' Massachusetts home. The Carnegie and Miller houses were internally connected so Louise Carnegie could visit her daughter and son-in-law every day. The New York state government attempted to charge Louise a $55,000 inheritance tax after her husband's death, but the
New York Court of Appeals ruled in 1922 that the tax did not need to be paid, as the Carnegies had
co-owned the mansion. Later the same year, the
Appellate Division of the New York Supreme Court found that the legislation creating the inheritance tax violated the
Constitution of New York, a decision upheld by the Court of Appeals. Louise Carnegie took an
option on 11 houses across the street from the mansion in 1923. The next year, she sold the lot on the southeast corner of Fifth Avenue and 90th Street to the Church of the Heavenly Rest, subject to restrictions on the church's height and use. Events included the 1927 marriage of the Carnegies' niece Louise Whitfield, as well as sewing classes, student club meetings, parties in the mansion's garden, and concerts. Meanwhile, development in the area had increased following Andrew Carnegie's death. The Carnegie Mansion and the houses across 91st Street had been restricted to residential use, but the restriction was lifted in 1934 when the Kahn House across the street was sold to the
Convent of the Sacred Heart, a girls' school. The mansion remained Louise Carnegie's residence in the 1940s, when
The New York Times wrote that her continued occupancy of the house "may come as something of a surprise to many persons". The conservatory's roof, which was blacked out during World War II, was not restored until the 1970s. Following Louise Carnegie's death, the mansion remained largely intact, and it was maintained by the family steward Alexander Morrison and a
skeleton crew. The Carnegie Corporation had no need to occupy the house, The proposal called for the house to contain the
United Nations Secretariat's offices in addition to clubrooms. but ultimately the UN never moved to the mansion. Edgar I. Williams, whose brother was the writer and poet
William Carlos Williams, and the building was closed for renovations two weeks later. The
Community Service Society of New York funded the work. Although Carnegie's library remained in use as the school's library room, the secretary's office and drawing room were adapted into
stacks and a reading room, respectively. and installed brighter lighting.
1950s and 1960s The writer Heather Ewing stated that the house and garden were "a fortress of peace from the outside realities" and helped inspire the School of Social Work's students. The New York School for Nursery Years, an institution affiliated with the School of Social Work, moved into 9 East 90th Street in October 1954. Although the School of Social Work did not pay rent, by the mid-1950s it was spending $50,000 annually just on the house's operation. The School of Social Work found that it could not reduce the garden's annual budget to less than $4,000; The School of Social Work became part of
Columbia University in 1959 and announced that it would move from the mansion to Columbia's main campus in
Morningside Heights "as soon as possible". The School of Social Work's relocation plans prompted concerns about the mansion's future, especially as other mansions on Fifth Avenue's "Millionaires' Row" were being demolished. the School of Nursery Years moved to the Carnegies' old garage. The Carnegie Corporation notified the School of Social Work in January 1967 that the school would have to leave the mansion within two years.
Smithsonian use As early as October 1967, the
Smithsonian Institution was negotiating to lease the mansion from the Carnegie Corporation. Although several other entities had expressed interest in the building, the Carnegie Corporation's secretary said it was almost certain the Smithsonian would get the lease. The museum was to pay $1 annually for 16 years, and a design show in 1974. Taylor initially had difficulties raising money for renovations because the Smithsonian rented, rather than owned, the mansion. This gift allowed the Cooper-Hewitt to begin raising money. By the beginning of 1973, the museum's collection had been relocated into the mansion's ancillary spaces, and local residents were using the house's garden. while construction firm New Again was the general contractor. Although
Hugh Hardy of HHPA did not want to restore the house to its exact appearance in the 1900s, he hired Italian craftsmen to restore the old architectural details. the grand stairs were reopened, and an elevator was installed. Bedrooms were combined to create a single large gallery and several smaller ones. In addition to the interior work, the museum planted 30,000 tulips in the mansion's garden. and the organ in the main hall was removed to Roslyn Harbor. the Cooper-Hewitt Museum
soft opened within the mansion in March 1976, Museum officials planned to host contemporary exhibitions and other events at 9 East 90th Street.
1980s and 1990s The Cooper-Hewitt Museum saw 250,000 visitors within a year of its reopening at the Carnegie Mansion. In 1979, the
Arthur Ross Foundation offered a $100,000 grant to the Cooper-Hewitt to restore the mansion's garden. The Cooper-Hewitt celebrated the tenth anniversary of its occupancy of the mansion in 1987. The museum had still not raised enough money for the second phase of renovations. HHPA devised plans for a new structure to replace the museum's staff parking lot. This plan would cost $23 million, of which half would be provided by
Congress and half raised through private sources, although Congress had not agreed to provide funding. There was not enough space for the gift shop, which occupied one of the mansion's halls. The museum also had no loading dock, and workers had to walk around the block every time they wanted to transport objects between the main mansion and 9 East 90th Street. The Cooper-Hewitt also said it would create a
master plan for the garden and the staff parking lot. At the time, the mansion was not fully accessible to people with disabilities; Pilgrim, who used a wheelchair, had to use a service entrance. The project was initially planned to cost $10 million, but Smithsonian secretary
Michael Heyman placed the plans on hold in late 1994 due to cost overruns. One major donation came from interior designer
Agnes Bourne, who sold the San Francisco house where she had resided for 11 months, and then donated $2 million to the museum. Pilgrim announced in May 1995 that the mansion's exhibition galleries would close for renovation, The 91st Street entrance was rebuilt, and elevators were installed to make the mansion and the 90th Street townhouses fully accessible. The mansion's first-floor exhibit space reopened in September 1996. and it had only of gallery space. As such, the Cooper-Hewitt had to close galleries every time a new exhibit was set up, and it had limited flexibility to present shows from other design museums. There was no freight elevator, and all exhibits had to be brought into the house through the main entrance. but he changed his mind after the museum experienced staffing, budgetary, and exhibit shortages. The museum announced plans in mid-2003 to rearrange galleries, During the mid-2000s, the museum added an admission desk to the mansion and built an digital-design gallery in the basement. News media reported in February 2005 that the Cooper-Hewitt was considering a $75 million proposal by
Beyer Blinder Belle to construct three basement stories under the mansion's garden, thereby nearly quadrupling gallery space to . A freight elevator and restaurant would also be added. That year, the museum launched a
capital campaign to raise funds for the renovation and the museum's
endowment; it had raised $21.5 million by April 2007. The Cooper-Hewitt hired
Gluckman Mayner Architects to design the renovation, along with Beyer Blinder Belle as preservation consultants. The Smithsonian began renovating the two townhouses on 90th Street, The mansion's exhibition galleries closed for renovations in July 2011, and the Cooper-Hewitt had raised $54 million by the end of that December, allowing work on the mansion to commence. Thirteen firms helped redesign the mansion, including
Diller Scofidio + Renfro, which redesigned the galleries. In addition to the new gallery and relocated offices, the project involved restoring architectural details and adding a freight entrance, a cafe, an enlarged gift shop, and restrooms. The restaurant was scrapped because it would have cost $7 million to dig into the bedrock. The museum reopened on December 12, 2014, the 112th anniversary of the Carnegies' move into the house. Additional renovations to the Arthur Ross Terrace and Garden were completed in 2015. The same year, the
U.S. Green Building Council gave the mansion and the two 90th Street townhouses a
LEED Silver green-building certification. ==Impact==