A very large sprawling dwelling house.

In the [[Touhou]] series, one of [[Gensokyo|Gensokyo]]'s landmarks is the Scarlet Devil Mansion. This mansion is home to [[Remilia Scarlet|Remilia]] and [[Flandre Scarlet|Flandre]], the Scarlet sisters. Other parts of the mansion include a [[library]] called the [[Voile]] and is mostly inhabited by [[Patchouli Knowledge]] and the [[clock tower]] on the rooftop. The mansion's gate is guarded by [[Hong Meiling]], as so that no one is allowed to enter the mansion (even though she allowed [[Kirisame Marisa|Marisa]] to enter by purpose).