One existing occupant, St. Peter's Lutheran Church, sold its plot on the condition that a new church building be constructed at the base of the tower. The design was announced in July 1973, and the structure was completed in October 1977. After a consultation between Citigroup's managers and the designers, it was decided to intervene with welds and reinforcement plates but at the same time to keep the story hidden from the press. The secret remained until 1995 when The New Yorker told it in a long article. Discover the unique architecture and premium amenities at 601 LexingtonAvenue office space. Take your business to new heights. Located in Manhattan's Midtown East, etc.venues 601 LexingtonAvenue is a versatile meeting and event space that maximizes flexibility. The venue spans more than 30,000 square-feet and comprises 12 meeting rooms, 10 of which feature divisble walls, allowing clients to extend the space as needed. 601 Lexington Avenue is a 59-story office tower in Midtown Manhattan, acquired by BXP in 2001. It offers on-site dining and fitness, direct access to a subway station, and is part of BXP's Midtown Campus. 2 days ago · A 59-story office tower with a distinctive angled top and a landmark building in Midtown Manhattan. Find out about its history, features, amenities, and leasing options for commercial tenants. The Citigroup Center (formerly Citicorp Center and also known by its address, 601 LexingtonAvenue) is an office skyscraper in the Midtown Manhattan neighborhood of NewYork City, NewYork, U.S. Built in 1977 for Citibank, it is 915 feet (279m) tall and has 1.3million square feet (120,000m2) of office space across 59 floors.