https://ryutridente.com/2017/04/21/parco-del-valentino%e3%81%ab100%e4%b8%87%e4%ba%ba%e3%81%ae%e8%a8%aa%e5%95%8f%e8%80%85%e3%81%8c%e6%9d%a5%e3%82%8b/
Parco del Valentinoに100万人の訪問者が来る