CommonWealth REIT (CWH) is a real estate investment trust (REIT). CWH's primary business is the ownership and operation of real estate, including office and industrial buildings and leased industrial land. As of December 31, 2011, the Company owned 516 properties. Its portfolio includes 317 office properties with 40.0 million square feet and 199 industrial and other properties with 32.3 million square feet. Its 199 industrial and other properties include 17.9 million square feet of leased industrial and commercial lands in Oahu, Hawaii. It also has 11 of its total properties with 1.8 million square feet are located in Australia. In addition, it owned 9,950,000, or 21.1%, as of December 31, 2011. In January 2012, it acquired an office property located in Chicago, IL with 1,006,574 square feet. In March 2013, it sold its remaining interest in Government Properties Income Trust.