Ippon Matsu Park Camp Ground Toilet is a contemporary facility completed in 2021, located in Umi Town, Fukuoka Prefecture. Designed by renowned architect Ryuji Fujimura of RFA, this public restroom exemplifies thoughtful integration of functional architecture within a natural park setting. The structure demonstrates modern design principles while serving the practical needs of campers and park visitors. As an auxiliary park facility, it represents contemporary approaches to designing public amenities that balance aesthetic considerations with everyday utility. The project showcases how contemporary architecture can enhance outdoor recreational spaces through careful design intervention.