Pokémon FireRed and LeafGreen/Route 5

Route 5
Route 5 is a short route that leads to Saffron City. There are tall grass areas behind the Pokémon Day Care which helps raising weak Pokémon.

Day Care
Pokémon can be left here to evolve over time, at a cost of 100 per level gained. Every step travelled outside the building gives the Pokémon 1 experience point.

Underground Path
The building to the right leads to an underground path that skips Saffron City and reaches route 6. This route has a lot of items. However, most of the items only appear after obtaining it from the Pokémon Center in Vermilion City. The little girl in this building will trade for a  in FireRed and  in exchange for a  in LeafGreen. The Pokémon received will be at the same level as the Pokémon given. The Nidoran♀ she gives you in FireRed is named Ms. Nido, so if you're not a fan of named Pokémon, consider this prior warning.

Underground Path's Items

 * Ether (middle of the red area)
 * Antidote (north, near the steps)
 * Paralyze Heal (near the north part of the blue part)
 * Awakening (in the middle of the blue area)
 * Potion (near the north part of the red area)
 * Ice Heal (in the middle of the area between red area and southern steps)
 * Burn Heal (near the southern steps)