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