All three have changed a bit over the years, but they retain their amazing historic significance. Arrow Dynamics' Matterhorn was the world's first tubular steel roller coaster, kicking off the modern era of roller coaster design. The Alweg monorail was the first monorail to operate daily in the western hemisphere. And the Submarine Voyage (rethemed to Finding Nemo in 2007) was Disneyland's largest attraction, with an immense (and mostly hidden) show building that duplicates its show scenes so that riders on each side of the subs can enjoy the same views.
All three opened with the dedication of the (first) New Tomorrowland on June 14, 1959.
If you can't be at Disneyland to celebrate in person today, enjoy our POV ride-through of Matterhorn Bobsleds, featuring the most recent installation of its famous Yeti.Tweet