A Walk Around The Griffith Observatory At Sunset

Griffith Observatory is a facility in Los Angeles, California sitting on the south-facing slope of Mount Hollywood in Los Angeles' Griffith Park. It commands a view of the Los Angeles Basin, including Downtown Los Angeles to the southeast, Hollywood to the south, and the Pacific Ocean to the southwest. The observatory is a popular tourist attraction with an extensive array of space and science-related displays. Since the observatory opened in 1935, admission has been free, in accordance with Griffith's will.

3,015 acres (12.20 km2) of land surrounding the observatory was donated to the City of Los Angeles by Colonel Griffith J. Griffith on December 16, 1896.[1] In his will Griffith donated funds to build an observatory, exhibit hall, and planetarium on the donated land. Griffith's objective was to make astronomy accessible by the public, as opposed to the prevailing idea that observatories should be located on remote mountaintops and restricted to scientists.

Griffith drafted detailed specifications for the observatory. In drafting the plans, he consulted with Walter Adams, the future director of Mount Wilson Observatory, and George Ellery Hale, who founded (with Andrew Carnegie) the first astrophysical telescope in Los Angeles.

As a Works Progress Administration (WPA) project, construction began on June 20, 1933, using a design developed by architect John C. Austin based on preliminary sketches by Russell W. Porter. The observatory and accompanying exhibits were opened to the public on May 14, 1935. In its first five days of operation the observatory logged more than 13,000 visitors. Dinsmore Alter was the museum's director during its first years.

During World War II the planetarium was used to train pilots in celestial navigation. The planetarium was again used for this purpose in the 1960s to train Apollo program astronauts for the first lunar missions.