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Old Chateau Platinum · Area

Old Chateau in Pokémon Platinum
Inside the Old Chateau

The Old Chateau is an abandoned mansion hidden off Eterna Forest, reached by cutting through the trees near the forest's edge. Rumours of ghosts keep even Gardenia away, and the only wild Pokémon inside are Gastly. It is optional, but it holds the Dread Plate and TM90 Substitute, and at night it is where you find Rotom hiding in an old television.

Wild Pokémon
1
Items
6
Trainers
0
HMs
Cut

Connects to: Eterna Forest

Where Old Chateau is on the Sinnoh mapOld Chateau on the Sinnoh map (marked at Eterna Forest)

Gift, legendary and roaming Pokémon

Rotom Lv. 20 · One-off encounter · Back Middle West Room

Examine the television in the back room of the Old Chateau at night (20:00–3:59). In Platinum no National Pokédex is needed.

Wild Pokémon

Old Chateau, Dining Area, Side Rooms, Corridor, Back West Room, Back Middle West Room, Back Middle Room, Back East Room

Walking inside encounter rate 10
PokémonTypeLv.MorningDayNight
GastlyGhostPoison14–17100%100%100%
Poké RadarGastly 22%Only in shaking grass while using the Poké Radar (after the National Pokédex).

Back Middle East Room

Walking inside encounter rate 10
PokémonTypeLv.MorningDayNight
GastlyGhostPoison14–17100%100%100%
Poké RadarGastly 22%Only in shaking grass while using the Poké Radar (after the National Pokédex).
Game Boy Advance game in slot 2Ruby: Gastly 4% Gengar 4%Sapphire: Gastly 4% Gengar 4%Emerald: Gastly 4% Gengar 4%FireRed: Gastly 4% Gengar 4%LeafGreen: Gastly 4% Gengar 4%With the National Pokédex and that GBA game inserted, these replace two 4% grass slots.

Chances are the game’s encounter slots: grass and caves 20/20/10/10/10/10/5/5/4/4/1/1, with the two 10% slots changing by time of day (morning 4:00–9:59, day 10:00–19:59, night 20:00–3:59); surfing and the Old Rod 60/30/5/4/1, the Good and Super Rods 40/40/15/4/1. Where to find every Pokémon.

Items

ItemHowWhere
Rare CandyItem ballDining Area
Big PearlItem ballDining Area
Honey ×3HiddenDining Area
Old GateauItem ballSide Rooms
Dread PlateItem ballBack West Room
TM90 SubstituteItem ballBack Middle East Room

Hidden items show up on the Dowsing Machine Pokétch app.

Tips

  • Gastly is the only wild Pokémon here (100%, Lv14–17).
  • Examine the TV in the back room at night (20:00–3:59) to battle Rotom at Lv20; in Platinum you don't need the National Pokédex.
  • If you knock Rotom out or run, it is back the next night, so save first and bring plenty of Poké Balls.
  • TM90 Substitute, the Dread Plate, a Rare Candy, a Big Pearl and an Old Gateau are all inside.
  • With a Ruby, Sapphire, Emerald, FireRed or LeafGreen cartridge inserted, Gengar can appear in one of the back rooms.
  • You need Cut in Eterna Forest to reach the entrance.

Walkthrough: Part 5: The Team Galactic Eterna Building and Cycling Road · Part 19: The National Pokédex and Roaming Legendaries

FAQ

How do you catch Rotom in Pokémon Platinum?

Go to the Old Chateau at night (20:00–3:59) and examine the TV in the back room to start a battle with Rotom at Lv20. Platinum doesn't require the National Pokédex.

Why won't Rotom appear in the Old Chateau?

It only appears at night (20:00–3:59); if you already battled it today, wait until the next night. The National Pokédex is not needed in Platinum.

Where is the Dread Plate in Platinum?

It is in an item ball in one of the back rooms of the Old Chateau.

What Pokémon can you catch in Old Chateau in Platinum?

1 species: Gastly.

Sources & picture credits

Guide text is original retrogameindex writing, checked against Bulbapedia and the game data. Wild Pokémon and encounter chances, items, trainers, rematch teams, gifts, trades and shops come from the pret/pokeplatinum decompilation, and the Pokémon and trainer sprites are drawn from the game’s own graphics in it. Location pictures © Nintendo / Creatures / GAME FREAK, archived from the Pokémon Wiki on Fandom (listed on the image gallery).