Hello how may I help you? Where is the tallest indoor waterfall? One moment while I look that up. Sure The tallest indoor waterfall is located in Singapore. It is 50 meters tall. Wow! That's tall! Where is the largest waterfall? The largest waterfall in the world is Angel Falls, located in Venezuela. It is 878 meters tall. Thanks for the info! Is there anything else I can help you with? No, that should be all today. Good bye.