[["location", "function", "size ( square feet )", "property interest"], ["boston ma", "corporate headquarters us tower division headquarters and american tower international headquarters", "19600", "leased"], ["southborough ma", "information technology data center", "13900", "leased"], ["woburn ma", "us tower division lease administration site leasing management and broadcast division headquarters", "57800", "owned ( 1 )"], ["atlanta ga", "us tower division accounting services headquarters", "21400",