I spent some time in Tokushima last December at the start of my walk along the Shikoku Fudo Myo Pilgrimage and so had the chance to see some of the illuminations.
Rather than the usual style of illuminations, Tokushima has been holding an LED Digital Art show at many sites around the city center. The biggest displays were executed by teamLab, an international arts cooperative. Luminous River, the biggest, was just a stones throw from my hotels so I got to see in many times.
More than 100 giant plastic white spheres floating on the river. Once the sun went down the spheres lit up in an everchanging sequence of colors acccmpanied by new age music piped from speakers along both banks.
The two bridges at either end already had permanent LED artwork installed on them, and on one of the bansk there was also many sculptural artworkd using lED's. Combined with all the normal illumination from the buildings it made for quite a sight....