Route 304 is a route bordering Route 303. It is essentially a dead-end as there is nowhere to go except back to Route 303.
Very little boundary exists between Route 303 and Route 304, therefore it is easy to accidentally cross onto Route 304 while exploring Route 303. At the beginning of the game Route 304 has nothing of interest for the player except a fishing spot which offers the same encounters as Route 303 and a lighthouse which holds no real significance as it does not respond to interaction. Despite the map on the Pokégear showing a large path of water between Route 303 and Yangtze Town, there is no way to reach Yangtze Town from Route 304.
Once the player has obtained Surf they may ride out to the small island residing in the middle of the body of water on Route 304 where they will find Gyaradosite as a result.
|Gyaradosite||Small island in the middle of the route.|