The concept of park furniture serving dual purposes—providing public seating while monitoring environmental hazards—represents a cutting-edge innovation in urban infrastructure. Specifically, the question of whether park chairs can detect cryoseism risks (also known as frost quakes) involves exploring the integration of seismic sensors and geotechnical monitoring systems into public benches. While not yet commonplace, prototypes and theoretical models exist where benches are equipped with accelerometers, temperature sensors, and subsurface acoustic monitors to identify stress buildups in frozen ground. These smart benches could potentially measure soil contraction, ice expansion pressures, and sudden fracturing events that characterize cryoseisms. Data would be wirelessly transmitted to municipal agencies for real-time risk assessment, providing early warnings for this rare but potentially damaging natural phenomenon. However, widespread implementation faces challenges including sensor accuracy in diverse climates, vandalism resistance, and cost-effectiveness. Current research focuses on miniaturizing geophysical instruments and developing AI algorithms to distinguish cryoseismic activity from other vibrations. Such technology could transform passive urban furniture into active guardians of public safety, though it remains largely in developmental stages rather than deployed solutions.