This is the Mystery Attic. It's full of strange objects... from the mysteries of Club Penguin...there's even a Box Portal by the buoy
The Lodge Attic (also known as the Mystery Attic) is the top story of the Ski Lodge; it is only accessed through a spiral staircase. However, it was not released at the same time as the Ski Lodge - primarily being built to have more places to play Find Four. A bunch of snow was stored in the Lodge Attic in January 2007 and March 2009 for the Festival of Snow and Snow Sculpture Showcase 2009.
The Lodge Attic was renovated on March 18, 2015, where it is now a place for penguins researching the many mysteries of Club Penguin. Various objects surrounded by rumors and mystery are located here as well. A Box Portal was also added to the room, allowing players to access the Box Dimension.
During the 2007 to 2008 Christmas parties, the top of the giant tree was poking out from the floor of the Lodge Attic.