Svarloka (in Buddhism: Arupadhatu), the highest and holiest realm, reserved for that gods. Generally known as svargaloka. The inner courtyard as well as roof of each temple symbolize the realm of svarloka. The roof of Prambanan temples are adorned and crowned with ratna (sanskrit: jewel), The form of Prambanan Ratna https://sites.google.com/view/hanuman-temple-adelaide/hindu-temples-in-south-australia