elevated platform inside sumur gumuling, the unique mosque at taman sari water castle - the royal garden of sultanate of

aged ancient archeology architecture art building castle complex corridor door elevate elevated entrance garden gate ground gumuling heritage history holy inside islam java jogja jogjakart jogjakarta landmark monument mosque muslim old palace park pass path platform royal sacred sari stair step structure sultan sultanate sumur taman the under underground unique vintage water way yogya yogyakarta