ClubCorp (NASDAQ: MYCC) is an American corporation with a home office in Dallas and is the largest owner and operator of private golf and country clubs in the country. It owns or operates more than 200 golf and country clubs and business, sports and alumni clubs worldwide. Located in 26 states, the District of Columbia and two foreign countries, the company and the clubs in its network services more than 430,000 members and employ approximately 20,000 peak-season employees.
The Willis Tower, built as and still commonly referred to as the Sears Tower, is a 110-story, 1,450-foot skyscraper in Chicago, Illinois, United States. Wikipedia