Archer also championed the construction of two new sports stadiums, Ford Field for the Detroit Lions and Comerica Park for the Detroit Tigers. In June 2007, the Detroit Riverfront Conservancy, a 501(c)(3) organization, celebrated the first significant opening of new public space on the Detroit International Riverfront since its inception in early 2003. It has raised hundreds of millions of dollars to develop and manage Detroit's riverfront. The International Riverfront area ranges from the Ambassador Bridge to Belle Isle in downtown Detroit, encompassing a multitude of parks, restaurants, retail shops, skyscrapers, and high-rise residential areas along the Detroit River. In 2009, Detroit Renaissance expanded its mission to address the need for regional economic development; the successor organization, Business Leaders for Michigan, is a group that gives thousands of dollars to Republican political campaigns. It is devoted to the creation of the Newt Gingrich-supported Michigan Turnaround Plan. Other participants in area revitalization efforts include the Detroit Riverfront Conservancy, the Detroit Economic Club, the Detroit Club, Cityscape Detroit, universities in the Detroit region, and the Michigan Economic Development Corporation, which has offices in the Cadillac Place state office complex in the city's New Center area. In recognition of the city's architecture and historic significance, many of the city's buildings and districts have been listed on the National Register of Historic Places. They are eligible for federal historic tax credits for development. State tax historic tax credits are also available for qualified historic preservation. Initiatives Some of Detroit's successful revitalizations include the New Center, Lafayette Park, East Ferry Avenue Historic District, Campus Martius, Grand Circus Park Historic District, and Washington Boulevard Historic District. In 2002, a major renovation of the historic Cadillac Place consolidated state offices from around the area into the city's New Center area. In 2003, General Motors completed a $500 million redevelopment of the Renaissance Center as its world headquarters. The east riverfront promenade development for the Detroit International Riverfront was planned at $559 million, including $135 million from GM and $50 million from the Kresge Foundation. The city has completed major redevelopment of Campus Martius Park and Cadillac Square Park. The plans have produced new downtown stadiums and a rebuilt freeway system intended to showcase the city for Super Bowl XL. With $1.6 billion in construction projects in 2004, the rapid pace of development in the city prompted construction of a $30 million cement terminal. In 2007, Bank of