. "The Glass Tower was designed by production illustrator Dan Goozee under the direction of the production designer William J. Creber. The largest of these was a feet ( m) model built on the concrete floor of the man-made Sersen Lake at the Twentieth Century-Fox Ranch located in Malibu. Irwin Allen Productions utilized a feet ( m) cyclorama of the San Francisco skyline for the view outside the Promenade Room windows. This artwork was completed by set designer Gary Coakley. (The cyclorama was also utilised in the Paramount Pictures, Star Trek IV: The Voyage Home in 1986)"@en . . "The Glass Tower was designed by production illustrator Dan Goozee under the direction of the production designer William J. Creber. The largest of these was a feet ( m) model built on the concrete floor of the man-made Sersen Lake at the Twentieth Century-Fox Ranch located in Malibu. Irwin Allen Productions utilized a feet ( m) cyclorama of the San Francisco skyline for the view outside the Promenade Room windows. This artwork was completed by set designer Gary Coakley. (The cyclorama was also utilised in the Paramount Pictures, Star Trek IV: The Voyage Home in 1986) The view depicted from the Glass Tower would be one seen from a vantage point feet ( m) above the center of San Francisco looking across the bay towards Oakland. The lights, which appeared to twinkle, were made by punching small holes in the backing and placing small quartz lights behind them. Blinking lights, representing aircraft warning lights on radio antennae and high hills, were lighted with red Christmas tree decorative lights. Shimmer was created on the \"bay\" waterby cutting slightly curly slits in the backing and hanging silk strips behind the backing. The strips were back lit and activated by gently by air fans to give the illusion of wave movement. The scenes involving the water tanks and the glass elevators were shot at Century City, California. The distinctive pill-shaped glass elevators were replicated on set after location shooting was filmed at the Hyatt Regency San Francisco in the Embarcadero Center. The top-floor restaurant set covered 11,000 square feet. The lowest level was six feet off the stage floor and the ceiling was 12 feet above that. Three sides of the set were backed by the cyclorama."@en . "Glass Tower"@en . . . .