From the Super Mario Wiki
Boo's Mansion is the home of some Boos in Paper Mario. Lady Bow and Bootler live here, as well as many other Boos. Mario needs to go through Forever Forest to get here. Down the road from Boo's Mansion is a windmill, Gusty Gulch, and Tubba Blubba's Castle.
Mario inside Boo's Mansion
The mansion consists of puzzles and traps that Mario must solve and get through to even greet Lady Bow. It has three floors.
In Paper Mario: The Thousand-Year Door, Boo's Mansion (though referred to only as "the mansion") is briefly mentioned by Bow, who appears (alongside Bootler) at Poshley Heights after the game is beaten. Apparently, it was a prolonged amount of time spent at the mansion that inspired Bow to take her vacation to Poshley Heights.
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The concept of a mansion haunted by ghosts and filled with puzzles has been used in other Mario games as well, most notably Super Mario World and Luigi's Mansion. Also, the Ghost House featured in Dance Dance Revolution: Mario Mix looks extremely similar to Boo's Mansion, including similar Boo portraits and chandeliers.
- It's Boo's Mansion. Great name for a haunted house, don't you think?
- What a magnificent mansion! Being haunted must hurt the real estate value, though. I like the old-fashioned yet eerie style. The chandelier and the display case look like they're valuable antiques. Even the sofa in the foyer looks like it's pricey, even though it's a bit worn. I love antiques. I wouldn't mind taking a good look at those things.
- Wow! What a gorgeous chandelier! If they actually cleaned it, it would brighten this place up.
- Hey, that strange contraption at the back of the room is a phonograph. You know, a machine for listening to records. Have you seen any records around here? I wouldn't mind doing a little adventuring to the timeless classic, "Mario's Theme"!
- The blue light is spooky in here, but you can tell that this room is really nice. It feels like something is watching us. It feels like that everywhere. It's almost as if this haunted mansion is...haunted.
- A storage room... isn't it? You'd think those candles would provide a bit more light.
- Another storage room, I guess. Not a whole lot here, as far as I can tell. Hey, incidentally, what happened to the door...?
- This room does have a lot of space, but it's still a shame to use it for storage. That pot and those wooden boxes look suspicious... There's also a weakened spot on the floor. Look...under the chandelier. Hey, check it out! A real old rocking chair! These things rule! It rocks back and forth when you sit on it. I love napping in these.
- There certainly seem to be a lot of books. I didn't know Boos liked books.
- This is the highest room in the mansion. I'm guessing it's Bow's room. She seems like the type to live in a huge room. When you look at this room, it's pretty obvious that Bow was raised by a really wealthy family of Boos.
Names in other languages
Teresa no Yashiki
||Buu Huus Villa
||Boo Hoo's Mansion
- The right room on the first floor contains a vase. If Mario is to jump into this vase, he will pop back out as an 8-bit sprite. This lasts until Mario jumps back into the vase or leaves the room, and it is worthy of note that playable 8-bit characters are somewhat of a running joke in Mario RPGs, having additionally been featured in Paper Mario: The Thousand-Year Door, Super Paper Mario and Super Mario RPG: Legend of the Seven Stars (which predates Paper Mario). However unlike Super Mario RPG in which it could only be performed once, in Paper Mario 8-bit Mario trick is repeatable.