When Walt Disney first approached designer John Hench in 1964 with the idea for a futuristic thrill ride, they had no idea that they would be creating one of the most popular and enduring theme park attractions of all time.

After 9 years of development, Space Mountain would finally open in 1975, and it continues to amaze guests around the world to this day.

This week's episode is an in-depth look at the development and legacy of one of the most magical theme park attractions in history; Space Mountain.