It turns out that Heaven on High has a jumping puzzle.
The reward?
https://i.imgur.com/FmjbYMn.jpg
Easy roof access to almost any housing plot in the game. It has to be turned a certain way but it becomes a rather easy staircase to climb once you get the hang of it.
Climbing video: https://www.youtube.com/watch?v=fWZqxsau8Yc
(Note: The furnishing is the jumping puzzle, not the dungeon itself.)