Hello how may I help you? Can you tell me where the tallest indoor waterfall in the world is located? Yes, I am able to do that. Okay. Is it in Asia somewhere? It is located in Singapore at the Gardes by the Bay. Okay.. Can you also tell me where the tallest natural waterfall is located? In Venezuela. Okay what is the difference is size between the two waterfalls? 54 m. Thank you for all you help You are welcome.