Hello how may I help you? You tell me where the world's tallest indoor waterfall is located? Im bot now Yes, can you tell me where the tallest indoor waterfall is located? Yes that would be the Casa Bonita in Denver Colorado Awesome! How about the tallest in the world? That is Angel Falls Where is Angel Falls? That is in Venezuela Very cool. Cartman likes the Casa Bonita in Denver Colorado I feel like I've heard that before. Thanks for your help bot! You're very welcome