than the corner platform 16 although horizontally offset therefrom the window platform 20 can be notched out to accommodate the window trim molding 19 a wall platform 21 is mounted to project from one wall 12 the platforms 16 20 21 are preferably located well above the floor i e five feet or more to provide good viewing and safety but this can be varied the perch steps 10a 10c and wall platform 21 are mounted by planar supports 24a 24d fastened against the surface of wall 12 as with screws 26 fig2 and 4 corner platform 16 is supported along two orthogonal edges with two full length planar supports 28a 28b respectively fastened to two intersecting walls 12 and 18 the window platform 20 has a partial length support 30 so as to be cantilevered both out from the wall 18 and laterally in front of the window 22 and extending the full length of the step 10a 10c fig2 4 show the constructional details of the lowest perch step 10a but the construction shown is typical for each of the steps 10a 10c and the platforms 16 20 and 21 the planar support 24a may be comprised of a solid wood board a section of plywood or plastic composite material shown extending the full length of the step 10a a beveled edge improves the appearance the step 10a is comprised of a stiff structural rectangular member 32 such as 1 8 inch hardboard which has its rear edge received in a slot 34 routed into the outer surface of the support 24a and retained with a suitable adhesive the upper surface of member 32 is overlain with a rectangular section of carpet 36 to provide a surface which is readily penetrated to.