in the year 1986. Tomorrowland's showpiece was the TWA Moonliner, derived from Disney's "Man In Space" television episodes developed in the 1950s. The Moonliner was the tallest structure in the park at the time, even taller than the park icon Sleeping Beauty Castle. The Moonliner hosted Rocket To The Moon which was a ride to the moon. The entrance showpiece was the clock of the world showing the time anywhere on earth. The north show building hosted Circarama U.S.A. which showed movies on nine screens, and space station X-1 which showed a satellite view of America. The south show building showed the Monsanto Hall of Chemistry, which was a walk-through tour about chemistry. Autopia, an opening-day attraction, gave visitors a view of the National Interstate System that was to be built in the future. The attraction still remains open today, though it has been modified and rebuilt several times. This is the only attraction in Tomorrowland that has been open since opening day. Several new attractions opened in 1955. Among them were Tomorrowland Boats, The World Beneath Us, which showed the Earth's geology, and the Aluminum Hall of Fame, sponsored by Kaiser Aluminum. The final Tomorrowland attraction to open in 1955 was The Flight Circle which demonstrated methanol-powered model planes, boats and cars. In 1956, Tomorrowland Boats were renamed Phantom Boats, and were closed later in the year. Dutch Boy Color Gallery opened in 1956, and sponsored Dutch Boy Paint. Two major attractions opened in 1956: the Astro Jets, where guests were able to fly their own rockets, and Skyway to Fantasyland, where guests rode "Buckets" over to Fantasyland. In 1957, the Monsanto House of the Future, a plastic house with four wings cantilevered from a central plinth, was built. This was similar to precursors at previous World's Fairs, though those were simply homes furnished with modern conveniences and aimed at housewives. Disneyland's attraction displayed conveniences such as picture phones and television remote controls, and it introduced many people to their first microwave oven. The Viewliner also opened where guests could ride in "the fastest miniature train in the world." It closed the next year making it the shortest lived Disney attraction ever. In 1959, three major attractions, the park's first billed E-ticket attractions, opened at Tomorrowland. These were Disneyland Monorail, Submarine Voyage, and Matterhorn Bobsleds (which later became part of Fantasyland). These additions were collectively so large in scope