
Basantapur Durbar at Kathmandu, Nepal. Palace was built after Shah king conquered the valley, this white palace is unique incomparision to other monument built in the surrounding of Basantapur Square. Basantapur Palace was residence for Shah kings till 1896, before moving to Narayanhiti palace.
For more info : http://en.wikipedia.org/wiki/Basantapur_Durbar_Square