Hello how may I help you? I have a world record question. Two actually Great, I can help out. What would you like to know? What's the tallest indoor waterfall where is it at? I've found the record for the tallest indoor waterfall. It's located in Singapore and stands at nine stories tall. Okay now what is the tallest outdoor waterfall and where is it? I've found the record for the largest natural waterfall. Angel Falls stands 3,212 ft tall in Venezuela. Thanks! No problem! Anything else I can find for you today? Nope Alright, happy to help.