Citigroup Center New York City Architecture and Facts

The Citigroup Center in New York City is a distinctive skyscraper that has been a prominent feature of the city's landscape since its completion in 1977. Designed by architect Hugh Stubbins and Associates, it stands at a height of 915 feet.

Its unique design features a series of seven interconnected buildings, each with its own distinct character. The Citigroup Center's innovative design has made it a beloved landmark in the city.

The building's unique design was a deliberate choice to create a sense of community and connection among the various tenants and users of the complex. The Citigroup Center's design has been widely praised for its creativity and functionality.

Located in the heart of Midtown Manhattan, the Citigroup Center is easily accessible by public transportation and is within walking distance of many major attractions and businesses.

Construction on Citigroup Center began a year after the groundbreaking ceremony in April 1974, with Vivian Longo supervising the project at just 25 years old. The tower's construction was a significant undertaking, with three thousand people employed at the peak and 565 workers on site simultaneously.

The steel framework of the tower was completed to the eighteenth floor by the end of 1975, and officials predicted that Citigroup Center would be the only major structure in New York City to be completed in 1977. This prediction proved accurate, with the tower being finished in 1977.

The tower's construction also involved the acquisition of two buildings at 148 and 152 East 53rd Street, which were used to expand the complex. Citibank acquired these buildings to prevent the development of topless bars, which would have decreased the value of the tower.

The Citigroup Center is located at 601 Lexington Avenue in Midtown Manhattan, taking up most of a city block bounded by Lexington Avenue, 54th Street, Third Avenue, and 53rd Street.

The building occupies a significant amount of space, covering a land lot of 70,572 sq ft with a frontage of 200 ft on Lexington Avenue and a west–east length of 325 ft.

The site was previously occupied by brownstone houses, commercial spaces, and even a church, with St. Peter's Evangelical Lutheran Church rebuilt on the corner of Lexington Avenue and 54th Street.

The development required the acquisition and clearing of 31 parcels of land, including the upscale Cafe Chauveron and the Medical Chambers on 54th Street, which was owned by a cooperative of doctors.

The New York City Subway's Lexington Avenue/51st Street station is conveniently located directly underneath the building.

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Construction on Citicorp Center began a year after the groundbreaking ceremony in April 1974.

The construction was supervised by Vivian Longo, who was just 25 years old when the building was completed in 1977.

At the peak of construction, three thousand people were employed, with 565 workers on site simultaneously.

The steel framework was completed to the eighteenth floor by the end of 1975.

Citicorp Center was predicted to be the only major structure in New York City to be completed in 1977 when the frame topped out on October 7, 1976.

The construction of Citicorp Center was a significant undertaking, with 565 workers on site simultaneously at its peak.

The first tenants moved into the office building in April 1977, and by August of the same year, it was 96 percent rented.

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The Citicorp Center's opening was a big deal, happening on October 12, 1977. Stubbins gave a speech that described the building as a "skyscraper for the people".

The retail complex at the base of the building, known as the Market, was almost fully rented out, with over 300 retailers applying to operate storefronts. Conran's, a household furnishings retailer, took up a huge 40,000 sq ft of space.

Citibank was planning to occupy 600,000 sq ft, or 26 stories, moving its offices from five other addresses in Midtown. The Consulate-General of Japan and technology company IBM also had a presence in the building.

The tower's slanted roof caused an ice problem during winter, as snow and ice would slide down onto the sidewalk. This was a notable issue that needed to be addressed.

The shopping concourse was initially lightly used and largely unknown to the public.

The architect behind the Citigroup Center was Hugh Stubbins, who led the design team at Hugh A. Stubbins & Associates. His associate architects, Emery Roth & Sons, also played a significant role in the project.

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The structural engineers responsible for the building's framework were LeMessurier Associates, led by Le Messurier Consultants. This team worked closely with the main contractor, HRH Construction Corporation, which was later acquired by the Starrett Housing Corporation during the construction process.

The building's elevators were installed by Otis Elevator Company, providing a reliable and efficient transportation system for the occupants. First National City Bank, the main developer, oversaw the entire project from start to finish.

Here's a list of key team members involved in the Citigroup Center project:

The 1980s and 1990s were a transformative time for Citigroup Center. In 1987, Citicorp sold a significant portion of the building, including the 23rd through 59th floors, to Dai-Ichi Mutual Life Insurance Company for $670 million.

Citicorp used the profits from the sale to reduce its losses, which had totaled $2.32 billion in the first half of 1987. The sale was a strategic move, allowing Citicorp to focus on its other projects, including One Court Square in Long Island City, Queens.

The Market shopping atrium, a popular feature of the building, fell into disrepair over the next two decades. In 1995, Citicorp embarked on a major renovation of the shopping concourse, which included replacing the brick pavers with terrazzo and installing new signs outside each storefront.

The renovation, designed by Gwathmey Siegel & Associates Architects, was a significant undertaking that lasted 18 months and cost $15 million. The shopping concourse was renamed the Shops at Citicorp Center and featured a 40,000 sq ft anchor tenant, Barnes & Noble.

The Citigroup Center is a remarkable building with a unique design that has captured the attention of many. Designed by Hugh Stubbins, the tower was built over a church, St. Peter's Lutheran Church, and stands on four giant columns in the middle of each side.

The building was the result of a complex design process that involved studying multiple alternate proposals, including one with stilts underneath each corner. However, this plan was scrapped due to concerns about structural integrity and zoning issues.

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The Citigroup Center's facade is made of anodized aluminum and reflective glass panels, with each segment measuring 12 by 9 ft. The windows are double-glazed to conserve energy, and the aluminum is silver-colored to reflect heat from sunlight.

The building's structural engineers, LeMessurier Associates and James Ruderman, played a crucial role in its design. The general contractor, HRH Construction Corporation, worked with numerous other contractors to supply materials for the building.

Here's a list of some of the key architects and engineers involved in the Citigroup Center's design:

The Citigroup Center is 59 stories high, with its roof about 915 ft above ground level. It contains 46 office stories and an annex with six or seven stories at 159 East 53rd Street.

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The Citigroup Center is a marvel of engineering and architecture. It's made of a whopping 24,000 short tons of steel, which is two-fifths of the amount used in the Empire State Building.

The tower's stories are built using trussed-tube construction, with each one measuring 157 by 157 feet. This results in a total floor space of 24,600 square feet per story.

The building's service core is a central feature, containing elevator shafts and emergency stairs. It's about 68 by 68 feet in size, with the surrounding floor space being just under 45 feet wide.

The Citigroup Center has a lot of rentable space, with approximately 1.3×10^5 square feet available. The office annex to the east adds another 270,000 square feet of space.

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The Citigroup Center's roof is a notable feature of the building. It rises 160 ft above the top story and faces south, sloping at a 45-degree angle.

The original design of the roof was intended to face west and contain several terraces. However, the architects decided to rotate it southward to accommodate flat-plate solar collectors.

The solar-collector plans were later scrapped due to smaller-than-expected savings and other issues. The design was kept, making Citicorp Center the first postmodern skyscraper in New York City with an entirely decorative roof.

The roof was eventually fitted with solar panels in 1983, thanks to a sponsorship from Consolidated Edison and Citibank.

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The plaza at the Citigroup Center is a large, underground space that's 12 feet beneath street level. It was designed by landscape architect Sasaki Associates and built along with the tower.

The plaza's presence was encouraged by the 1961 Zoning Resolution, which gave developers a zoning "bonus" for including open space outside their buildings. This bonus allowed for additional floor area, which is a significant advantage in a densely populated city like New York.

The plaza has an area of 6,000 square feet, which is a decent size for a public space. Its presence allowed the tower to be designed with a maximum floor area ratio of 18:1, higher than the 15:1 ratio specified for the area.

The plaza is accessed by a diagonally-oriented stairway extending northeast from the corner of Lexington Avenue and 53rd Street. This entrance is a convenient way to get to the plaza from the surrounding streets.

The south side of the plaza contains an entrance to the Lexington Avenue/51st Street subway station, which is a major transportation hub. This entrance replaced two previous subway entrances on the sidewalk, making it easier for people to get to the plaza.

The north side of the plaza contains the entrance to St. Peter's Church, which is a historic and beautiful building. The plaza's design was influenced by a handbook published by the City Planning Commission in 1975, which outlined best practices for designing public spaces.

The plaza initially contained brown brick floor pavers, which gave it a warm and inviting atmosphere. There was also a fountain at the center of the plaza, which was designed to conceal noise from the surrounding environment.

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The Citigroup Center was a pioneering project that marked a significant shift in the city's skyline. It was completed in 1977.

The building was designed by architect Hugh Stubbins and Associates, who were tasked with creating a unique and functional space. They worked closely with the engineering firm of Skidmore, Owings & Merrill to bring the project to life.

The Citigroup Center was a massive undertaking, with a construction cost of $230 million. This was a staggering amount for its time, equivalent to over $1 billion today.

The building's design was influenced by the need for a large, open floor plan. This allowed for maximum flexibility and adaptability, making it an ideal space for a variety of uses.

The Citigroup Center's structure is made up of 24,000 short tons of steel, which is a significant amount, considering it's only two-fifths of the amount used in the Empire State Building.

The building's frame is a trussed-frame structure, made up of steel columns and concrete and steel slabs, which provides stability against horizontal forces like wind or seismic activity.

Each tower story measures 157 by 157 ft, with a total floor space of 24,600 sq ft.

The facade of the building is a non-load bearing curtain wall system, anchored to the structural frame by brackets, anchors, and mullions.

The curtain wall system transfers loads imposed by wind and temperature changes to the building's primary structural elements.

The building's structure is made up of six levels of V-shaped trussed steel that transfer loads to the four "super" columns and the center core.

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The Citigroup Center is a prominent office skyscraper in Midtown Manhattan, and it's a popular subject for photographers.

Located at 601 Lexington Avenue, the building is easily recognizable in photos of the New York City skyline.

The Citigroup Center is situated in the heart of Midtown Manhattan, making it a great spot to capture the energy of the city.

A wide angle view of Midtown Manhattan, looking north towards Central Park, often features the Citigroup Center prominently in the frame.

The building's sleek design and iconic status make it a favorite among photographers and tourists alike.

At night, the Citigroup Center takes on a new persona, with its lights shining brightly against the Manhattan skyline.

The building's entrance, located at 601 Lexington Avenue, is a great spot to capture the urban energy of the city.

The Citigroup Center is often featured alongside other iconic buildings in photos of the New York City skyline, such as the Rockefeller Center.

The building's unique design and prominent location make it a staple of Midtown Manhattan's cityscape.

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