In modern urban planning, the integration of technology into public infrastructure has led to innovative solutions for safety and convenience. One emerging question is: are there park chairs equipped with earthquake sensors? The answer is yes, as advancements in smart city technology have introduced park benches designed with embedded seismic sensors. These specialized chairs serve a dual purpose: providing seating for park visitors and functioning as early warning systems for earthquakes. The sensors detect initial seismic waves, allowing for rapid alerts to be sent to local authorities and the public via connected networks. This technology is particularly valuable in earthquake-prone regions, enhancing community resilience by leveraging everyday furniture for safety. While not yet ubiquitous, prototypes and pilot programs in cities like Tokyo and San Francisco demonstrate their feasibility, combining durability, solar power, and real-time data transmission. Such innovations represent a growing trend toward multifunctional public spaces that prioritize both comfort and emergency preparedness.