When noncovalently bound to macromolecules, photoisomerizing molecules can be harnessed for controlling the properties of materials at length scales spanning at least three orders of magnitude. In this presentation, I will discuss my recent work seeking fundamental understanding of how the nanometer-scale photoinduced changes in azobenzene and spiropyran derivatives can be translated into different applications involving polymers. First, starting from the length scale of 10-100 nm, the morphology of self-assembled diblock copolymers can be switched by supramolecularly attaching azobenzene molecules selectively to one of the blocks upon dip-coating nanostructured thin films. Similarly, the size of diblock copolymer micelles, consisting of a neutral and polyzwitterionic blocks, can be doubled upon photoisomerizing spiropyran guest into its merocyanine form. Second, I will discuss the supramolecular material design guidelines of how azobenzene motion is converted into all optical surface patterning resulting in micron-scale surface reliefs. Third, stimuli-induced changes visible at the macroscopic scales are discussed, by introducing supramolecular polymer-azobenzene humidity memories and light-switchable polymer wrinkles at the scale of approximately 10-100 μm. This presentation highlights that the key to achieving high-tech applications is to first understand the delicate balance of supramolecular interactions in soft condensed materials, and then develop methods for controlling them.