Fortree City is "a city of tree houses" located in central Hoenn, east of Route 119. According to Wallace, Fortree is known as the most beautiful city in Hoenn. Its gym leader is Winona.
It debuts in Chapter 222.
- The Hoenn gym leaders meet to discuss Teams Aqua and Magma, and in the process split along Aqua-supporters and Magma-supporters
- The first reference to Norman's past occurs
- Sapphire loses to Winona and agrees to become her apprentice
- Sapphire discovers Ruby's true strength
- Sapphire earns the Feather Badge