Planning and development in Detroit since the late 20th century has attempted to enhance the economy and quality of life of Detroit, Michigan, United States. In 1970, the private group Detroit Renaissance began to facilitate development in the city. Its successor, Business Leaders for Michigan, has continued to facilitate development into the 21st century. Projects have included new commercial facilities, revitalization of neighborhoods, hospitality infrastructure, and improvements to recreational and public facilities, such as the QLine light rail project. History In 1970, Henry Ford II conceived of the Renaissance Center as a way to help the city retain residents who were moving to the suburbs. The group announced the first phase of construction in 1971. Detroit Mayor Roman Gribbs touted the project as part of "a complete rebuilding from bridge to bridge," referring to the area between the Ambassador Bridge that connected Detroit to Windsor, Ontario and the MacArthur Bridge, which connects the city with Belle Isle Park. He presented architectural renderings of "linked riverfront parks" from Renaissance Center to MacArthur Bridge, like a necklace, for public access. The first Renaissance Center tower opened on July 1, 1976. Architects' initial design for the Renaissance Center focused on creating secure interior spaces, while its design later expanded to connect with the exterior spaces and waterfront through a reconfigured interior, open glass entryways, and a Wintergarden. Late in 1973, Detroit elected its first African-American mayor, Coleman Young. During his administration, major developments completed included a combination of residential, retail, business, and retail projects: Renaissance Center, the Joe Louis Arena, the Detroit People Mover, the General Motors Detroit/Hamtramck Assembly Plant, Detroit Receiving Hospital, the Chrysler Jefferson North Assembly Plant, the Riverfront Condominiums, the Millender Center Apartments, Harbortown, 150 West Jefferson, One Detroit Center and restoration of the Fox Theatre. Dennis Archer, a former Michigan Supreme Court Justice and mayor in the mid-to-late 1990s, supported a plan to add casinos as a catalyst for development in Detroit. Initially, his plan was for a casino cluster along the east riverfront. Ultimately, three large hotels with attached casinos were constructed in or near Detroit's downtown area: the Greektown Casino Hotel, the MGM Grand Detroit, and the Motor City Casino. In 2007, USA Today reported that the State of Michigan received more than $8.3 million yearly from Detroit's three casinos, and that in 2006 Detroit ranked fifth in U.S. casino markets with $1.3 billion in annual revenue.