Until the end of September, the illumination event, 'Illuminara' is held at Manyo Botanical Garden in Nara. The entire garden is lit up with thousands of LED lights. It looks really beautiful and enchanting when the evening comes (open from 6pm, you can see the lights from 6:30pm until 9:30pm, last entry at 9pm). You will be able to walk through the garden and experience a new world.
http://www.illumina-ra.com/