Vanishing Ghost House
From the Super Mario Wiki
Vanishing Ghost House, or Meringue Clouds-Ghost House, is the Ghost House of Meringue Clouds in New Super Luigi U. It is unlocked by completing Stonecrush Tower and its own competion unlocks Above the Bouncy Clouds, Flame Chomp Ferris Wheel and Three-Headed Snake Block.
The player comes in the Ghost House, with the platforms disappearing behind them. They then hop onto a rotating block, with multiple ? Blocks and Obake Blocks. Another platform appears, followed by another rotating block. Even more platforms and Obake Blocks will follow. Afterward is a door leading to the Goal Pole.
After the second rotating block drops down, the player should jump to the left to find a secret door. This leads to the secret platform, which accesses a shortcut to Ludwig's Block-Press Castle.
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