The last two volumes of Ranma ½ are devoted to its final and longest arc, the Phoenix Saga, which takes the characters* back to where it all started for the first and only time not counting flashbacks: Jusenkyo, the Valley of Sorrows, and its surroundings like the Ho'o Mountain where the Phoenix Tribe live, ruled by the super-powered Saffron.
( the symbolism of girlfriend photos )*Well, the characters as in the Jusenkyo victims of the regular cast, plus Akane who gets kidnapped there later. I've always wished Ukyo could have played a part in the last adventure, but I can see why she couldn't - she doesn'st know about Ryoga's, and it might have taken too much finagling to keep her from finding out. 
