check the link.
totally
The area of Stenton - mansion - is 12,140.5692672 square meters.
The area of Mount Pleasant - mansion - is 4,046.8564224 square meters.
The area of Mansion Historic District is 182,108.539008 square meters.
The area of Wadsworth Mansion at Long Hill is 1,092,651.234048 square meters.
Mount Cornonet the first time you go in it that area,Trophy Garden in Pokemon mansion.
The area of Vanderbilt Mansion National Historic Site is 853,886.7051264 square meters.
finish area 2
a trainer has them
The bird house is in the back yard of the mansion, available after beating area 2.
you can find a wild kirlia in the Pokemon mansion area but not in the Pokemon mansion
if you are talking about the one in the resort area u must get many useful badges then try again..i am still unable to get in there too :) but that is how a local platinum person i kknow did it
there is club bliss surf club merge karma and aztec mansion (karma mansion aztec are only sometimes)