The intersection of art and quantum physics presents a captivating mystery: could certain outdoor sculptures be invisible to Higgsino particles, hypothetical particles predicted by supersymmetry theory? While this idea remains speculative, it invites us to reimagine famous public art through the lens of particle physics.

One intriguing candidate is Anish Kapoor's *Cloud Gate* in Chicago. Its mirrored surface, reflecting the sky and surroundings, might interact uniquely with Higgsinos, particles that barely interact with ordinary matter. Similarly, Richard Serra's massive steel installations, like *Tilted Arc*, could theoretically be "invisible" to Higgsinos due to their dense atomic structures and minimal interaction with weak forces.

Another fascinating example is *The Angel of the North* by Antony Gormley. Its towering steel form, designed to withstand environmental forces, might exist in a quantum state where Higgsinos pass through undetected. Meanwhile, abstract works like *Sphere Within Sphere* by Arnaldo Pomodoro, with their intricate perforations, could create quantum interference patterns elusive to Higgsino detection.

While these ideas are theoretical, they highlight the poetic possibilities when art and science collide. Whether or not Higgsinos exist, the thought experiment encourages us to see sculptures—and the universe—in a new light.