Watch Tower of the Sun (2018) : Full Movie Online Free Tarō Okamoto became world-famous by designing the “Tower of the Sun” at Expo ’70 in Osaka. The ideas and problems that came with its creation, however, are intertwined with the evolution of Japanese culture – from the Paleolithic up until modern times. In his documentary debut, director Kōsai Sekine takes us on a philosophical journey that transcends the visual limits of documentaries.