Moonfire festival just had a complicated and long one but it just ended.
And like others have said: sightseeing logs are good if you like exploring and jumping, and the Leap of Faith GATE at the Gold Saucer.

I think there's also a quest to rescue a kitten at Falcon's Nest but I don't think it counts as a jumping puzzle once you get flying because making any of the jumps that would require a mount will just engage flight instead, though you might be able to adjust that with hotkey/settings.