of the summit. In 1903, George Ellery Hale visited Mt. Wilson and was impressed by the perfect conditions for which to set up the observatory, which would become the Mount Wilson Solar Observatory in 1904. In 1905, were leased for 99 years by the Carnegie Institution for Science in order to construct telescopes, and construction began on a new Mt. Wilson Hotel. In 1908, a telescope was completed at the summit, and, in 1910, the Solar Tower was erected. In 1913, the hotel burned down and was replaced by a second hotel that lasted until its demolition in 1966. The Toll Road opened to automobiles in 1912 and lasted until 1936. In 1917, the Hooker Telescope was completed and saw first light and would be the world's largest telescope until the opening of the Hale Telescope at Palomar Observatory in 1948. In 1919, American astronomer Edwin Hubble arrived at Mt. Wilson and, throughout the 1920s, made many astronomical discoveries using the Hooker Telescope. Among his contributions are the observational proof that many nebulous objects are actually galaxies beyond our own Milky Way galaxy, the classification of galaxies according to the Hubble sequence, and the development of Hubble's law relating a galaxy's observed red shift to its distance away. These contributions led to an understanding that the universe is not static, but expanding. This concept is the basis of the Big Bang theory of cosmology. In 1926, Albert Abraham Michelson made what was then the most precise calculation of the speed of light at the time by measuring the round-trip travel time of light between Mount Wilson and Mount San Antonio away. Mount Wilson Electronics Reservation The first television antenna on Mount Wilson was erected in 1947 for pioneer station KTLA channel 5. At about the same time, the first FM station broadcast from Mount Wilson, which was the old KFI-FM on 105.9 FM (signed off in 1950). The mountain became so popular as a site for transmitters that, in 1963, the Metromedia company bought from the Mount Wilson Hotel Company. Metromedia built Skyline Park, which consisted of a pavilion, a children's zoo and landscaped walks. The park closed in 1976 after operating at a loss for almost a decade. The property is now the home of numerous transmitters serving the Los Angeles metropolitan area and includes radio, television and microwave relay facilities. The tallest of these, according to the FCC