wiki says "Hamengkubuwono (also spelt Hamengkubuwana and in Dutch transcription "Hamengkoeboewono") is the current ruling royal house of the Yogyakarta Sultanate in Yogyakarta Special Region of Indonesia". Now yogyakarta ruling by Hamengkubuwono X and this is his palace.
Subject to potential mate.
You must correct some aspects, tilt and blown highlights.
Nice shot but I agree with rcuello entirely