Sigiriya or The Lion’s Rock in Sri Lanka is the rock fortress built on top of a 1,214 feet (370 meters) rock during King Kasyapa’s regime (477 AD – 495 AD). On this fortress there had been parks for the royals which included water retaining structures and sophisticated surface/subsurface hydraulic systems (some of which are working today as well). Moreover there had been man-made reservoir, five gates at entrances, garden system for aesthetic beauty, drinking water, and air cooling. Sigiriya is one of the seven UNESCO World Heritage sites in Sri Lanka. Below is a picture from this magnificent Sigiriya fortress’s paintings, that is believed to be drawn in 5th Century BC. The women on these paintings are known as Srigiri Apsara’s.