The Twilight Zone Tower of Terror is celebrating it's 20th Anniversary and to celebrate that here are 20 fun facts about the attraction: Our Walt Disney Imagineers viewed 156 episodes of â€œThe Twilight Zoneâ€ for inspiration when creating The Twilight Zone Tower of Terror. The ride vehicle is an elevator car. The storyline of the attraction sets the date as Halloween night â€“ October 31, 1939. The architecture of the tower was inspired by multiple Southern California landmarks, such as the Biltmore Hotel and the Mission Inn. The building features 27,000 roof tiles. The outdoor queue area features the songs â€œInsideâ€ by Fats Waller and â€œMood Indigoâ€ by Duke Ellington. The grounds of the Hollywood Tower Hotel were inspired by the look of Californiaâ€™s Griffith Park and Elysian Park. The lobby of the Hollywood Tower Hotel was outfitted with antiques and furniture purchased at Los Angeles-area auction houses. Some of the sculptures featured in the lobby are the work of 19th century sculptor Auguste Moreau. A copy of â€œFour Pages of Hilarious Star Caricatures by Walt Disneyâ€ is featured in Photoplay Magazine on the lobbyâ€™s concierge desk. The Library room features a hidden nod to Mickey Mouse in this sheet music, which is for the song â€œWhat! No Mickey Mouse?â€ The clip of film in which Rod Serling introduces the attraction was taken from a â€œTwilight Zoneâ€ episode called â€œItâ€™s a Good Life.â€ While actor Rod Serling appears in the film in the Library room, the voice you hear is actually voice actor Mark Silverman. The young girl who disappears in the elevator carries a Mickey Mouse doll. The attractionâ€™s â€œFifth Dimensionâ€ scene was inspired in part by the â€œLittle Girl Lostâ€ episode of â€œThe Twilight Zone.â€ The attraction offers a 13-story drop. The drop sequence for each elevator car is selected at random by the attractionâ€™s computer system. Measuring 199 feet tall, Tower of Terror is one of the tallest attractions at Walt Disney World Resort. There are now four Tower of Terror attractions at Disney Parks: Disneyâ€™s Hollywood Studios (Walt Disney World Resort), Disney California Adventure park (Disneyland Resort), Walt Disney Studios Park (Paris), and Tokyo DisneySea (Tokyo â€“ pictured above) each have their own version. The attraction will take center stage during runDisneyâ€™s Tower of Terror 10-Miler Weekend this fall, which will feature a The Twilight Zone Tower of Terror 10-Miler, a 5K fun and kids races.