A former tentative list of UNESCO World Heritage - known as Karaton, the Yogyakarta Palace Complex is located in the center of the city of Yogyakarta or just Yogya as the local Javanese call it. I saw it from the outside as it was after closing time. It was built by Sultan Hamengkubuwono who was also the architect. Postcard shows "Bangsal Sitihinggil Kraton Ngayogyakarta Hadiningrat. Beautiful stamps used. Thanks to Shinta of Indonesia.