Muso Soseki (1275-1351) was granted the title of National Teacher (kokushi) by seven imperial reigns spanning the North-South Courts conflict, earning the epithet ‘Imperial Tutor of Seven Reigns.’ He designed the UNESCO World Heritage gardens of Tenryuji and Saihoji (the Moss Temple) in Kyoto, and the garden of Zuisenji in Kamakura. He also proposed the Tenryuji trade ships to fund the temple, influencing Japanese foreign policy. Visit Tenryuji, Saihoji, and Zuisenji to experience his legacy.