The player will first reach Castro Valley once they have passed through Botan City in the north. As well as having a gym, the city contains the Koolboyman Mansion. The player needs to visit it to obtain the Virus Scan, required to pass through the Haunted Forest north of Botan City.
The gym is located in the south of the city, just above the harbor. The leader is Koji, who uses Fighting-type Pokémon at levels 35-41. Winning will award the player TM01 (DynamicPunch) and the Fist Badge.
The Mansion is a place containing wild pokémon, trainers and items. It contains the Virus Scan, which the player needs to progress through the Haunted Forest.
This harbor is the final stop of S.S Anne and requires a ticket to enter. However when the player does finally get the S.S. Ticket, the ship isn't in there. Despite this, the ticket is not necessary to get through, since the player can bypass the sailor by surfing in the water and landing below him.
In the harbor, the ship cannot be entered but a truck is parked on the right. A CoronetStone is hidden inside (which causes Magneton to evolve into Magnezone). This is a reference to the rumor that Mew is under a truck in Pokémon Red/Blue.
Trade House[]
In the house to the left of the Pokémon Center, a girl wants to trade her Chansey for the player's Pidgey.
Castro Valley is the first settlement in Rijon that the player will reach after passing through the International Tunnel, and the first Rijon Gym they are able to challenge.
Items[]
Item
Location
Image
Super Rod
From the Fishing Guru in the house to the left of the Pokémon Center
This gym is the first that the player will encounter in Rijon. It is located in the south of the city, just above the harbor. The leader is Koji, who uses Fighting-type Pokémon at levels 59-63. Winning will award the player TM55 (Counter) and the Fist Badge.
In Prism, the Mansion is being developed into apartments. The building has no wild Pokémon or trainers, but there are some items that can be found.
Harbor[]
The harbor can be accessed via the building in the south of the city. A Ferry Ticket is needed to reach Route 86 and the Battle Arcade, which requires the player to obtain all 8 Rijon badges.
Trade House[]
In the house in the north-west corner of the city, a girl wants to trade her Chingling for the player's Tyrogue.
A colored background means that the Pokémon can be found in this location at that time of day. A white background means that the Pokémon cannot be found at that time.
The gym is located in the south of the city, just above the harbor. The leader is Ginta, who uses Fighting-type Pokémon at levels 37-43. Winning will award the player TM01 (Focus Punch) and the Fist Badge.
Harbor[]
Trade House[]
In the house to the bottom left corner of town, an old man offers to trade his Jynx for a Poliwhirl.
All Maps[]
Maps (All Games)
Brown
Prism
Rijon Adventures
Trivia[]
Castro Valley's layout is very similar to Olivine City's prototype design.