Abstract: An upstanding ladder is provided including opposite side stiles and vertically spaced horizontal rungs extending between and interconnecting the stiles. A platform has one marginal portion thereof pivotally mounted from the uppermost rung with the platform being generally horizontally disposed and extending outwardly of one side of the ladder. The stiles project above the ladder and the base ends of a pair of arms are pivotally mounted from the stile upper ends for swinging about horizontal axes paralleling the ladder rungs. The outer free ends of the arms are interconnected by an outwardly opening V-shaped tree trunk embracing brace extending and secured therebetween and seat structure is mounted from and extends between the outer ends of the arms and is spaced outward from the base ends of the arms pivotally mounted from the stile upper ends.