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The Renaissance Center (also known as the GM Renaissance Center and nicknamed the RenCen) is a group of seven interconnected skyscrapers in Downtown Detroit, Michigan, United States. Located on the International Riverfront, the Renaissance Center complex is owned by General Motors as its world headquarters. The central tower, the Detroit Marriott at the Renaissance Center, is the tallest all-hotel skyscraper in the Western Hemisphere, and features the largest rooftop restaurant, Coach Insignia.〔(Official World's 100 Tallest High Rise Buildings (Hotel Use) ). ''Emporis.com''. Retrieved on May 30, 2008.〕 It has been the tallest building in Michigan since it was erected in 1977. John Portman was the principal architect for the original design. The first phase consisted of a five tower rosette rising from a common base. Four 39-story office towers surround the 73-story hotel rising from a square-shaped podium which includes a shopping center, restaurants, brokerage firms, and banks. 〔〔 The first phase officially opened in March 1977. Portman's design brought renewed attention to city architecture, since it resulted in construction of the world's tallest hotel at the time.〔 Two additional 21-story office towers (known as Tower 500 and Tower 600) opened in 1981. This type of complex has been termed a ''city within a city.'' In 2004, General Motors completed a US$500 million renovation of the Class-A center as its world headquarters, which it had purchased in 1996. The renovation included the addition of the five-story Wintergarden atrium, which provides access to the International Riverfront.〔AIA Detroit Urban Priorities Committee, (January 10, 2006).(Top 10 Detroit Interiors ) ''Model D Media''.Retrieved on November 23, 2007.〕 Architects for the renovation included Skidmore, Owings & Merrill, Gensler, SmithGroup, and Ghafari Associates. Work continued in and around the complex until 2005. Renaissance Center totals making it one of the world's largest commercial complexes.〔(GM Renaissance Center – Project Facts ). ''Skidmore Ownings & Merrill''. Retrieved on August 21, 2009.〕〔(GM Renaissance Center ).''Hines''. Retrieved on July 7, 2008.〕 In July 2015, the General Motors Renaissance Center re-branded itself as “The GMRENCEN.” The logo was modernized and “Reflecting a New Detroit” was introduced as the new tagline. A photo-journalistic advertising campaign launched to shine a spotlight on the people in Detroit who make remarkable contributions to the city. ==History== Conceived by Henry Ford II and financed primarily by the Ford Motor Company, the Renaissance Center became the world's largest private development with an anticipated 1971 cost of $500 million.〔Detroit News Staff (September 29, 2001). (How the Renaissance Center changed the landscape of Detroit ) Michigan History, ''The Detroit News.'' Retrieved on November 23, 2007.〕 The project was intended to revitalize the economy of Detroit.〔 In its first year of operation it generated over $1 billion in economic growth for the downtown.〔 In 1970, Ford Motor Company Chairman Henry Ford II teamed up with other business leaders to form Detroit Renaissance, a private non-profit development organization, which he headed in order to stimulate building activity in the city. The group announced the first phase of construction in 1971. In addition, Detroit Renaissance contributed to a variety of other projects within the downtown area in the ensuing decades. Henry Ford II sold the concept of the RenCen to the City and community leaders. Detroit Mayor Roman Gribbs touted the project as ''a complete rebuilding from bridge to bridge,'' referring to the area between the Ambassador Bridge that connects Detroit to Windsor, Ontario and the MacArthur Bridge, which connects the city with Belle Isle Park.〔 The ''city within a city'' arose. The first tower of the Renaissance Center opened on July 1, 1976. Principal architect John Portman was also the architect for the Westin Peachtree Plaza Hotel and the Peachtree Center in Atlanta, Georgia; the Embarcadero Center in San Francisco, California; and the Bonaventure Hotel in Los Angeles, California. For phase I, the facade of the first five towers was covered with of glass, and used about of concrete.〔 This did not include the additional glass used for the atriums.〔 Phase I of the Renaissance Center cost $337 million to construct, employing 7,000 workers.〔 In 1977, the central hotel tower of the Renaissance Center opened as the Detroit Plaza Hotel, managed by Western International Hotels,〔 to become the world's tallest all-hotel skyscraper〔 surpassing its architectural twin, the Peachtree Plaza Hotel in Atlanta. The hotel was later renamed The Westin Hotel Renaissance Center Detroit. In 1986, it was surpassed in height by The Westin Stamford in Singapore. Since 1986, the Renaissance Center's central tower has held the distinction as the tallest all-hotel skyscraper in the Western Hemisphere.〔〔(【引用サイトリンク】url=http://www.emporis.com/en/wm/bu/?id=marriottrenaissancecenter-detroit-mi-usa )〕 On April 15, 1977, Henry Ford II and Detroit mayor Coleman Young unveiled a plaque commemorating the private investors whose funds made the project possible and, later that evening, 650 business and society leaders attended a benefit celebrating the Renaissance Center's formal dedication. The money raised from the $300-per-couple tickets went to the Detroit Symphony Orchestra. When it opened, the cylindrical central tower was originally the flagship of Westin Hotels. The top three floors of the hotel hosted an upscale restaurant, The Summit, that rotated to allow a 360 degree view.〔 The shopping center in the podium originally housed boutiques, but now contains a greater complement of restaurants in the retail mix.〔 In 1980, Detroit hosted the Republican National Convention and presidential nominee Ronald Reagan and former President Gerald Ford both stayed at the Renaissance Center while in attendance. Metro Detroit expanded upon the city within a city concept with the nearby Southfield Town Center office complex with its five inter-connected golden skyscrapers constructed from 1975 to 1989. In the ensuing years, the Renaissance Center would face competition from the growing suburban office market. In 1987, the elevated Detroit People Mover transit line, after many years of construction, began operation with a stop at the Renaissance Center. At first, the Ford Motor Company had occupied many offices in the building. In 1996, General Motors purchased the complex and moved its world headquarters to the Renaissance Center downtown from what is now the historic Cadillac Place state office complex in the New Center district, northwest of downtown.〔(New Center Council ). Retrieved on May 16, 2009.〕 Before the acquisition, Sibley's Shoes had its headquarters in the center. Architects' initial design for the Renaissance Center focused on creating secure ''interior spaces'', while its design later expanded and improved to connect with the exterior spaces and waterfront through a reconfigured interior, open glass entryways, and a Wintergarden.〔 By 2004, GM completed an extensive $500 million renovation of the Renaissance Center.〔 This included a $100 million makeover for the hotel. Among GM's first actions was to remove the concrete berms facing Jefferson Avenue. The renovation includes a lighted glass walkway which encircles the interior mezzanine for ease of navigation, while the addition of the Wintergarden provides riverfront access and a view of Canada. A covered skyway over Jefferson Avenue connects to the Millender Center, Courtyard by Marriott - Downtown Detroit, and Coleman A. Young Municipal Center.〔 The Renaissance Center is owned by General Motors. The hotel in the central tower is now managed by the Marriott hotel chain and is called the Detroit Marriott at the Renaissance Center. The 1,298-room hotel is one of the largest operated by Marriott. The rooftop restaurant (which no longer revolves) received a $10 million renovation and is operated by The Epicurean Groups's Coach Insignia. It serves Coach wines, a product of the Fisher family whose legacy includes Fisher Body, a name which is part of GM history.〔(Coach Insignia ). The Epicurean Group. Retrieved on October 23, 2013.〕 The Renaissance Center's renovation provides for the prospect of continued development and restorations throughout the city. Architectural critics have touted the city's architecture as among America's finest.〔〔(''Look Up: Top 10 Downtown Buildings,'' ) AIA Detroit.''Model D'' media, Retrieved on July 4, 2010.〕 In July 2010, Blue Cross Blue Shield of Michigan announced plans to lease of Tower 500 and Tower 600 and relocate 3,000 of its employees from its building in Southfield, Michigan. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Renaissance Center」の詳細全文を読む スポンサード リンク
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