The Citigroup Center is an office tower in midtown Manhattan. It was designed by architect Hugh Stubbins and structural engineer William LeMessurier in 1977. It is 279 m tall and has 59 floors. The building is one of the most distinctive and imposing in New York’s skyline, thanks to a 45° angled top and a unique stilt-style base. The northwest corner of the site was originally occupied by St. Peter’s Evangelical Lutheran Church.

When planning for the skyscraper began in the early 1970s, the northwest corner of the proposed building site was occupied by St. Peter’s Lutheran Church. The church allowed Citicorp to demolish the old church and build the skyscraper under one condition: a new church would have to be built on the same corner, with no connection to the Citicorp building and no columns passing through it, because the church wanted to remain on the site of the new development, near one of the intersections.

Structural engineer William LeMessurier set the 59-story tower on four massive columns, 35 meters high, positioned at the center of each side, rather than at the corners. This design allowed the corners of the building to cantilever 22 meters, providing space at the northwest corner for the new church.