Global total: 77 million sq. ft.

Headquarters: New York

Chief executive: Richard B. Clark

Brookfield Properties is a publicly traded REIT that owns, develops, and manages property in the U.S., Canada, and Australia, including the World Financial Center in New York, Brookfield Place in Toronto, and the Bank of America Plaza in Los Angeles. Ric Clark has been with Brookfield and its predecessors since 1984 and has been president and CEO since 2002.