Exterior, Glass Siding Material, Flat RoofLine, and Wood Siding Material Surrounded by Lake Koggala, TRI Hotel is a sustainably built resort Sri Lankan resort with green walls and roofs, recycled wood furniture and solar heating that offers spectacular 360-degree views of verdant rainforests and the lake.  Photo 3 of 11 in Escape to the Jungle in One of These Modern Forested Retreats