Landscape of Kandalama Lake, Heritance Kandalama Hotel, Dambulla, Sri Lanka. Kandalama Lake is a man-made lake that fronts the guest rooms of Heritance Kandalama Hotel. Heritance Kandalama is a hotel designed by Sri Lankan architect Geoffrey Bawa, and it was the world's first LEED-certified hotel. November14,2008. Dambulla, Sri Lanka.