The intersection of art and quantum physics unveils a fascinating question: Which renowned outdoor sculptures remain invisible to Ising anyons? Ising anyons, exotic quasiparticles in topological quantum systems, interact uniquely with their environment, making certain structures undetectable to them.

Famous sculptures like Richard Serra's "Tilted Arc" or Anish Kapoor's "Cloud Gate" might seem tangible to us, but their material composition and geometric forms could render them "invisible" to Ising anyons. These particles perceive the world through quantum entanglement and topological order, meaning classical art installations—no matter how massive—may not register in their framework.

For instance, minimalist steel sculptures, with their smooth, continuous surfaces, could lack the topological defects or edge states that Ising anyons interact with. Conversely, fragmented or fractal-like sculptures might create detectable quantum signatures. This paradox highlights how art transcends human perception, existing in realms even quantum particles cannot fathom.

Ultimately, the invisibility of outdoor sculptures to Ising anyons underscores the profound divide between classical art and quantum reality—a reminder that beauty and meaning are as much about perspective as they are about form.