Hello how may I help you? help me with world records please Sure. What are you inquiring about today? where can i find the tallest indoor waterfall? The tallest indoor waterfall can be found in Singapore. how about outdoor ones? The tallest outdoor waterfall can be found in the Brazilian mountains. how tall is that one? It is 1,894 feet tall. would i survive if i jumped from it? It's possible, but I would not recommend trying it.