Medjuck also hired John DeCuir as production designer. The script did not specify where Gozer would appear, and DeCuir painted the top of Dana's building with large, crystal doors that opened as written in the script. The fictional rooftop of 55 Central Park West was constructed at Stage 12 on the Burbank Studios lot. It was one of the largest constructed sets in film history and was surrounded by a 360-degree cyclorama painting. The lighting used throughout the painting consumed enough power the rest of the studio had to be shut down, and an additional four generators added, when it was in use. Small models such as planes were hung on string to animate the backdrop. The set was built three stories off the ground to allow for filming from low angles.