We had just arrived at the Isurumuniya Temple at the southern end of Anuradhapura's Sacred City, and were scoping out the grounds. The temple is set in a large rock near the Tissa Wewa lake, and just to the left of the main shrine was a small cave. "Hey, check this out!" I shouted to Jürgen, immediately regretting the volume of my voice. The cave was filled with thousands of bats who came swooping out above me. Jürgen might have been impressed, if he hadn't been busy with his own terror: a six-foot long serpent had slithered across his path. Welcome to Isurumuniya.
Without the presence of its three artificial lakes near the city center, Anuradhapura would never have flourished. Tissa Wewa, Nuwara Wewa and Basawakkulama ensured that the people would always have rice and fresh water, even during the long months between monsoons. At the time of their construction, over two millennia ago, they were among the world's greatest feats of engineering, and continue to amaze today.