The IBM Building is a skyscraper in the Central Business District of Johannesburg South Africa. It was built in 1976 to a height of 91 metres. The building was initially built to house the South African headquarters of IBM but after IBM moved their headquarters to Sandton the building is unoccupied as of 2005. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
A:
Building