Abstract: The present invention is directed to a climbing structure. The climbing structure is configured to be portable, adjustable, modular, safe to use, and assembled without the use of tools. The portable climbing structure is comprised of at least two panels which are adjoined together to form the climbing surface of a frame. The climbing structure is further comprised of a padded layer covering the panels, a pair of side rails configured on a left and right vertical side of each panel, and a pair of adjustable bars connected to the adjoined panels at the side rails to adjust an incline angle. The frame and the padded layer are provided with a plurality of openings which receive detachable grips.