and edge 211 contains integral l shaped beam 204 the rear wall 40 comprises slanted edges 404 and 405 with a slot 408 at the top bottom edge 401 left edge 402 right edge 403 and horizontal beam member 406 with groove 407 similarly a front wall member comprises slanted edges 504 and 505 with slot 508 at the top bottom edge 501 left edged 502 right edge 503 and horizontal beam member 506 with groove 507 a door 52 and windows such as 53 54 and 55 are also disposed in the front wall an intermediate wall member 80 comprises right edge 803 left edge 802 bottom edge 801 top edge 804 and slant edge 805 a second floor member 30 comprises front edge 304 rear edge 303 left and right side edges 301 and 302 and stair well 305 a left roof member 60 comprises an inner panel 62 and an outer panel 61 panel 62 comprises edges 621 622 623 624 and inner longitudinal beams 625 and 626 panel 61 is a composite of longitudinal shingles 615 forming the panel with edges 611 612 613 and 614 a horizontal beam 604 having an angular cross section is secured to the upper edge 624 of panel 62 a right roof member 70 comprises an inner panel 71 and an outer panel 72 panel 71 comprises edges 711 712 713 and 714 and inner longitudinal beams 715 and 716 panel 72 is a composite of longitudinal shingles 725 forming the panel with edges 721 722 723 and 724 a horizontal ridge beam 704 having a triangular cross section with a downwardly depending rib portion 705 is secured to the inner part of edge 714 a chimney 96 comprising peg 960 is adapted to be inserted in.