The Sigiriya Rock Fortress built back in 5th Century by King Kasyapa. It has been named a World Heritage Site by UNESCO. Apart from its gigantic size, Sigiriya’s wonder is in its advanced irrigation systems said to be well ahead of its time. engineers from around the globe are still bewildered by the existence of such advanced technology in such ancient times. The fortress is further enhanced by its beautiful water gardens, frescos of Sigiriya Damsels, the graffiti Mirror Wall and the giant paws of a lion carved into the rock at the entrance to the final ascent to the top.