In an era where environmental monitoring and public safety converge with technology, the concept of park chairs equipped to detect radioactive particles in the air is not just science fiction but an emerging reality. These innovative benches integrate advanced sensors capable of identifying and measuring radioactive elements, providing real-time data on air quality and potential hazards. Designed for public spaces, they serve dual purposes: offering seating comfort while functioning as discreet environmental guardians. The technology behind these chairs typically includes Geiger-Muller tubes or semiconductor-based detectors that can pinpoint isotopes like radon, cesium-137, or other anthropogenic radionuclides. Data collected is often transmitted wirelessly to central monitoring systems, alerting authorities to abnormal levels and enabling swift responses. While not yet ubiquitous, prototypes and pilot programs in technologically advanced cities demonstrate their viability, highlighting a growing trend towards smart urban infrastructure that prioritizes health and safety through unobtrusive means.