The Erawan Waterfall has been famous in Kanchanaburi for many years. The clear water falling over the yellow limestone into the green pool below is a sight to be seen. When the sun is out, the light reflecting off the water and the lush green forest will make you believe you are in heaven. Location: The Erawan Waterfall is located in the Namtok Erawan National Park. It borders Amphoe Muang, Amphoe Si Sawat, and Amphoe Sai Yok in the Kanchamabori Province. This area has a mountainous landscape surrounded by fields of green. The National Park is located in Amphoe Si Sawat.