Ahch-To

Ahch-To is an ocean world scattered with green stone islands, lost to galactic charts for millennia - the birthplace of the Jedi Order. Temple Island holds the first Jedi temple, a sacred uneti tree library, the mosaic of the Prime Jedi, and a dark-side sea cave in perfect mirror-balance; Lanai caretakers tend the stone village, and porgs nest on every cliff.

Luke Skywalker found it by the old maps and exiled himself here after Ben Solo's fall. Rey trained on its cliffs in 34 ABY, Yoda's spirit burned the tree ('the greatest teacher, failure is'), and from its meditation ledge Luke projected himself across the galaxy to Crait - then passed into the Force facing its twin suns.