The luminescent Shanti Stupa is a steep 555 steps above Leh in Ladakh at over 3657m/12,000 ft. in elevation, and was built by Japanese Buddhist Bhikshu Gyomyo Nakamura in 1991 when there were no roads or lights, using six donkeys for help. The stupa holds relics of the Buddha at its base, and was enshrined by the Dalai Lama. I've gone here on each of my three visits to Ladakh, the first time in 1997, six years after it was completed.
When in Leh, you can easily see Shanti Stupa rising above the city, and can access it by going up to Changspa and then walking up the steep steps. I happened to walk up at night, but day or night, it's magical.