The concept of park chairs equipped to detect flerovium, a synthetic superheavy element with the atomic number 114, sounds like science fiction. Currently, no such public infrastructure exists. Flerovium is an extremely unstable element, produced in minute quantities within specialized particle accelerators and lasting for only a few seconds before decaying. The technology required to detect it involves highly sensitive and enormous equipment, like mass spectrometers, which are entirely impractical for integration into a public bench. The idea, however, sparks a fascinating discussion about the future of urban sensing. Imagine a world where public furniture is embedded with advanced sensors to monitor environmental data or even subtle chemical changes. While detecting a specific, short-lived element like flerovium remains firmly in the realm of theoretical physics, the convergence of material science and public infrastructure could lead to surprisingly smart cities in the future.