From Kanchanaburi we went to Erawan National Park and trekked up the hillside to see the waterfalls. We were advised to wear decent shoes, not flip flops or sandals. Anyway being sensible we wore trainers, unlike some others we saw. On our way down we saw a group of Russians, one of them was wearing platform sandals, one was wearing a thong and flip flops..
Anyway the waterfalls are spectacular. Judge for yourself.