I’m looking for a children’s book I had back around 15-20 years ago. It was a large picture book of a Victorian mansion (or castle?). Each page was another cross-section of a wing of the mansion, and a brief description and clue of something specific to search for on that page before turning to the next. I remember one page involving a dance/ball, and another involving a pillow fight, and one involving a garden/outdoors. Each cross-section depicted multiple floors, and the top ones typically belonged to the wealthy family while the lower ones depicted the staff/maids/bulter’s quarters, etc. I believe the protagonist is a young female child, and I vaguely remember there being a pelican involved — not sure if that was a character or part of the title; perhaps a mascot who guides the girl through the book. The pictures were very artistic and detailed, somewhat sophisticated and very amusing, so likely a book for children over 8 years old.