

A network of concrete wartime/Cold War–era underground corridors and rooms converted into a small public park—offer stark, graphic compositions: repeating arches, textured concrete, pipes, valves and moody artificial light. Best visited early morning or late afternoon for softer external light at entrances; interiors are dim year-round so expect low light. Site is partly open-air and partly enclosed; check local signage for restricted areas. Street parking nearby in Tomigusuku; no entry fee but敬


A network of concrete wartime/Cold War–era underground corridors and rooms converted into a small public park—offer stark, graphic compositions: repeating arches, textured concrete, pipes, valves and moody artificial light. Best visited early morning or late afternoon for softer external light at entrances; interiors are dim year-round so expect low light. Site is partly open-air and partly enclosed; check local signage for restricted areas. Street parking nearby in Tomigusuku; no entry fee but敬