Nungnung Waterfall in Bali is the most photogenic waterfall to visit In Bali. There is a parking lot a the top (paid) and you must pay your entrance fee. After that you need to walk down about 300 stairs (the hard part is coming back up). Once you reach the bottom of the gorge you will be greated with the most impressive view. I would not recommend to swim as the current can be quite strong. Tne best time to visit is before 9AM and from May - July.