I don't remember when I first discovered Thor Heyerdahl and his Kon-Tiki expedition, but it made quite the impression on me. I read books -in particular Heyerdahl's own- and made them available to my kids when they were young. So exciting! It turns out Heyerdahol was wrong... but still, what an adventure!
There's a documentary from 2012 here:
The voyage began on this date in 1947. There's a museum.