Outdoor sculptures have the unique ability to transform public spaces into captivating visual experiences through clever optical illusions. By manipulating perspective, scale, and materials, artists create works that challenge viewers' perceptions. Some sculptures appear to float mid-air, while others change shape when viewed from different angles. Techniques like anamorphosis—distorting images that only resolve correctly from a specific viewpoint—are commonly used. Reflective surfaces, hidden supports, and forced perspective further enhance the illusion, making static sculptures seem dynamic. These artistic tricks engage passersby, turning ordinary plazas and parks into interactive art galleries. The interplay of light and shadow also plays a crucial role, with some illusions only becoming apparent at certain times of day. From seemingly impossible balancing acts to sculptures that appear to melt into the ground, these public artworks demonstrate how three-dimensional form can deceive the eye and spark imagination in urban environments.