quality:corruption, linguistic:paraphrasing, quality:correction
Headquarters and offices

IBM is headquartered in Armonk, New York, a community 37 miles (60 km) north of Midtown Manhattan. A nickname for the company is the " Colossus of Armonk ". Its principal building, referred to as CHQ, is a 283,000-square-foot (26,300 m) glass and stone edifice on a 25-acre (10 ha) parcel amid a 432-acre former apple orchard the company purchased in the mid-1950s. There are two other IBM buildings within walking distance of CHQ: the North Castle office, which previously served as IBM's headquarters; and the Louis V. Gerstner, Jr., Center for Learning (formerly known as IBM Learning Center (ILC)), a resort hotel and training center, which has 182 guest rooms, 31 meeting rooms, and various amenities.

IBM operates in 174 countries as of 2016, with mobility centers in smaller market areas and major campuses in the larger ones. In New York City, IBM has several offices besides CHQ, including the IBM Watson headquarters at Astor Place in Manhattan. Outside of New York, major campuses in the United States include Austin, Texas; Research Triangle Park (Raleigh-Durham), North Carolina; Rochester, Minnesota; and Silicon Valley, California.

IBM's real estate holdings are varied and globally diverse. Towers occupied by IBM include 1250 René-Lévesque (Montreal, Canada) and One Atlantic Center (Atlanta, Georgia, US). In Beijing, China, IBM occupies Pangu Plaza, the city's seventh tallest building and overlooking Beijing National Stadium ("Bird's Nest"), home to the 2008 Summer Olympics.

IBM India Private Limited is the Indian subsidiary of IBM, which is headquartered at Bangalore, Karnataka. It has facilities in Coimbatore, Chennai, Kochi, Ahmedabad, Delhi, Kolkata, Mumbai, Pune, Gurugram, Noida, Bhubaneshwar, Surat, Visakhapatnam, Hyderabad, Bangalore and Jamshedpur.

Other notable buildings include the IBM Rome Software Lab (Rome, Italy), Hursley House (Winchester, UK), 330 North Wabash (Chicago, Illinois, United States), the Cambridge Scientific Center (Cambridge, Massachusetts, United States), the IBM Toronto Software Lab (Toronto, Canada), the IBM Building, Johannesburg (Johannesburg, South Africa), the IBM Building (Seattle) (Seattle, Washington, United States), the IBM Hakozaki Facility (Tokyo, Japan), the IBM Yamato Facility (Yamato, Japan), the IBM Canada Head Office Building (Ontario, Canada) and the Watson IoT Headquarters (Munich, Germany). Defunct IBM campuses include the IBM Somers Office Complex (Somers, New York), Spango Valley (Greenock, Scotland), and Tour Descartes (Paris, France). The company's contributions to industrial architecture and design include works by Marcel Breuer, Eero Saarinen, Ludwig Mies van der Rohe, I.M. Pei and Ricardo Legorreta. Van der Rohe's building in Chicago was recognized with the 1990 Honor Award from the National Building Museum.