Numerical proportion considered to be an aesthetic ideal in classical design. It refers to the ratio of the base to the height of a rectangle or to the division of a line segment into two in such a way that the ratio of the shorter part to the longer is equal to that of the longer to the whole. It works out to about 1.61803:1. A rectangle constructed from golden sections (segments in this ratio) is called a golden rectangle.
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Golden eagle (Aquila chrysaetos).
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Golden Gate Bridge, San Francisco.
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The historic City of Golden is a Home Rule Municipality that is the county seat of Jefferson County, Colorado, United States. Golden lies along Clear Creek at the eastern edge of the foothills of the Front Range of the Rocky Mountains. Founded during the Pike's Peak Gold Rush on 16 June 1859, the mining camp was originally named Golden City in honor of Thomas L. Golden. Golden City served as the capital of the provisional Territory of Jefferson from 1860 to 1861, and capital of the official Territory of Colorado from 1862 to 1867. In 1867, the territorial capital was moved about east to Denver City. The United States Census Bureau estimates that the city population was 17,366 in 2005.
The Colorado School of Mines, offering programs in engineering and science is located in Golden. Also there are the National Renewable Energy Laboratory, the Coors Brewing Company, The American Mountaineering Center, and the Colorado Railroad Museum. It is the birthplace of the Jolly Rancher, a candy bought out by the Hershey Foods Corporation. Famous western showman William F. "Buffalo Bill" Cody is buried nearby on Lookout Mountain.
Through the latter 19th to early 20th centuries Golden maintained a small town population of around 2,500 people. Several industries faded or were destroyed by tragic events, but others flourished to continue Golden's industrial legacy including its brewing, brickmaking, clay mining and porcelain industries. Golden became even more connected through mass transit, with two trolley lines extending to Denver, while the movie theater gradually took the place of the opera house for downtown entertainment. Downtown revitalization efforts began in the 1920s with its first streetscape and ornamental lighting project and urban renewal on its north and east, anchored by new senior high and grade schools. The historic cultural tension between the city's north and south sides gradually eased, and the town successfully endured additional major economic depressions including the Silver Crash of 1893 and the Great Depression. The School of Mines gained a worldwide academic reputation, Coors rapidly came to the forefront of the national and international brewing and porcelain industries, and the city modernized with a recreation center, paved streets and more.
After World War II Golden boomed, rapidly gaining population, size and economy. In 1959 the town nearly tripled in geographic size overnight when it annexed large properties to the south including the new Magic Mountain theme park, one of the earliest entertainment attractions of its kind. A number of new subdivisions were built and public infrastructure was modernized including a new senior high school, city hall and central fire and police stations, new downtown anchors including department stores and grocery stores, several new church buildings, new county offices, and the Horizon Plan which transformed the School of Mines. The Oil Crash and near simultaneous failure of several downtown anchors placed its central business district into recession by the 1980s, and the downtown was revitalized again through various initiatives including its second streetscaping project in 1992. In 1993 the old Golden High School building was converted into the American Mountaineering Center making Golden a premier research and education hub for mountaineering. The Coors Brewery had become the largest single site brewery in the world,its porcelain plant among the foremost of its kind in the world, and Golden became home to the National Renewable Energy Laboratory. Today Golden has a population of around 18,000 people and is home to more people and businesses of national and international influence than ever before, yet maintains a small town historic identity all its own.
Golden is mostly situated just north of Interstate 70; U.S. Highway 6 and Highway 93 connect to most of town. State Highway 470 starts in Golden. It's location near I70 and near the mountains makes it an ideal location for outdoor enthusiasts who also need to earn a living in the Metro Denver area.
Golden is now regarded as a western suburb of Denver and part of the Denver Metropolitan Area. Golden and Jefferson County are home to some of the world's best mountain biking. Chimney Gulch/Windy Saddle to Apex Park is a common bike route, with several hairpin turns up the side of Mount Zion and Lookout Mountain. Many of the best trails in Jefferson County are either in or very near Golden. 
Natural outdoor rock climbing is also a local pastime at the locally known North Table Mountain, with many bolted and trad routes from 5.5 to 5.13d.
Recently, as part of the Fossil Trace Golf Course in Golden, they have opened a free self-guided walking tour through some of the better preserved fossils: 
Golden is scheduled to be the endpoint of the West Corridor in Denver's FasTracks commuter rail network by 2013.
As of the census of 2000, there were 17,159 people, 6,877 households, and 3,913 families residing in the city. The population density was 735.3/km² (1,905.1/mi²). There were 7,146 housing units at an average density of 306.2/km² (793.4/mi²). The racial makeup of the city was 90.66% White, 1.03% Black or African American, 1.05% Native American, 2.99% Asian, 0.06% Pacific Islander, 1.98% from other races, and 2.24% from two or more races. 6.59% of the population were Hispanic or Latino of any race.
There were 6,877 households out of which 26.4% had children under the age of 18 living with them, 44.7% were married couples living together, 8.8% had a female householder with no husband present, and 43.1% were non-families. 29.5% of all households were made up of individuals and 5.9% had someone living alone who was 65 years of age or older. The average household size was 2.31 and the average family size was 2.85.
In the city the population was spread out with 20.3% under the age of 18, 16.9% from 18 to 24, 33.4% from 25 to 44, 21.4% from 45 to 64, and 8.0% who were 65 years of age or older. The median age was 33 years. For every 100 females there were 120.2 males. For every 100 females age 18 and over, there were 118.7 males.
The median income for a household in the city was $49,115, and the median income for a family was $67,414. Males had a median income of $41,822 versus $32,413 for females. The per capita income for the city was $25,257. About 3.5% of families and 11.3% of the population were below the poverty line, including 6.4% of those under age 18 and 7.6% of those age 65 or over.
Golden's current elected officials are:
The current City Manager is Michael C. Bestor.
Golden was among the first municipally governed cities in Colorado and has one of the oldest continuously functioning governments in the state. To date Golden has held 89 popular elections for municipal officials since its first such election in 1860, including 83 regular elections and 6 special elections in 1860, 1879, 1882, 2005, 2006 and 2008.
The closest airport to Golden is nearby Rocky Mountain Metropolitan Airport, a general aviation air transport facility located in northeastern Jefferson County. Passenger traffic generally uses Denver International Airport in northeastern Denver. However, residents of Golden might also choose to go to Colorado Springs Airport in Colorado Springs.
Golden, originally home to the second school in Colorado, is today part of the Jefferson County R-1 School District which provides public education throughout Jefferson County, Colorado. The city has three elementary schools, Mitchell, Shelton and Ralston Elementary in the foothills to the west; one middle school, Bell MIddle School; and Colorado's oldest senior high school, Golden High School. In higher education Golden features the oldest public owned institution of higher education in the state, the Colorado School of Mines, which campus lies near the heart of the city overlooking its core area.
Golden has several annual events which draw people from around the city and Colorado. These include Heart & Soul Month in February, two Independence Day fireworks shows sponsored by Heritage Square (since 1971) and the Golden Lions Club (since 1972), the largest event of the year in Buffalo Bill Days in late July (since 1946); the Golden Fine Arts Festival in August (since 1990), Goldenfest in September (since 1978, originally Oktoberfest), and Olde Golden Christmas (since 1972) in November to December.
The American Mountaineering Center is home to the American Alpine Club, The Colorado Mountain Club, and Outward Bound. The Henry S. Hall, Jr. American Alpine Club Library and Colorado Mountain Club Collection is the world's largest repository of mountaineering literature and is internationally known. The American Mountaineering Center is also home to the Bradford Washburn American Mountaineering Museum and hosts many programs and events each year. This premier facility and the town's location near plenty of world class rock climbing, skiing and mountaineering make Golden a center for mountaineering culture.
A few people that have been born, lived, or died in the Golden area are: