The Hoenn region is a large region to the southwest of Johto. The names of most of the cities in Hoenn are made of two words put together (Little Root, Fort Tree, Slate Port, etc.). Professor Birch of Littleroot Town offers the Pokémon known as Treecko, Torchic or Mudkip to trainers beginning their journey of this vast land.
The Hoenn region boasts many dramatic environments from rainforests to deserts. However, its most striking feature is its abundance of water. There are several large islands off the mainland only accessible via water routes, many of which are suitable for diving because they are so deep. It seems to have a warmer climate than Kanto, Johto, and Sinnoh. Much of the interior area is forested or mountainous, so most notable cities are found on the coastline. People who live in towns and villages in the mountain areas must adapt to the harsh environment. An extreme example of this is the inhabitants of Fortree City, who live in tree houses. This is in stark contrast to other regions in the Pokémon world. Routes in Hoenn number are numbered as 101-134, breaking the former pattern set up by Kanto and Johto. Some of the routes have differing weather conditions depending on the day they are traveled on.