text: St. Peter's Lutheran Church At the northwest corner of Citigroup Center is St. Peter's Lutheran Church at 619 Lexington Avenue. The exterior was designed by Stubbins and Hammer, while the interior was furnished by Vignelli Associates. The church's congregation permitted Citicorp to erect the office tower only if an edifice, structurally unconnected to the tower, were built at the same location as the congregation's old building. Andrew Alpern and Seymour Durst characterized the agreement as "ecumenically joining God and mammon to the benefit of both". In addition, at least 63 percent of the church was to have "nothing built above it". According to Stubbins, the lack of structural connections would give the church a "breathing space" of its own. The church was described by the architectural writer David W. Dunlap in 2004 as the city's "most architecturally successful postwar sanctuary".
  The structure rises about  above ground and  above the Citigroup Center's plaza. It has a facade of brown Caledonia granite interspersed with ashlar. The roof is clad in copper that is coated with lead. The materials were meant to establish a distinct identity for the church while also associating it with the office tower. At the top of the church building, a skylight bisects it from southwest to northeast, allowing passersby to look inside. A window at the corner of Lexington Avenue and 54th Street also overlooks the pipe organ inside. Stubbins had intended the structure's shape to resemble a pair of hands "held up in prayer with light coming between them". Arnaldo Pomodoro designed a bronze cross for the exterior, which was installed in 1982 and measures  tall by  wide.