Hello how may I help you? Can you tell me where the tallest indoor waterfall is located? Sure, the tallest indoor waterfall is in Cloud Forest. Never heard of it. Is that an amusement park? It's an indoor forest and exhibit. OK. Now can you tell me where the tallest regular waterfall is? Sure the tallest waterfall is Niagra falls, in Canada! How tall is it? It's 678 feet tall. Wow. Thanks for all the facts :) You're welcome!