Hello how may I help you? Hey where is the tallest waterfall that is indoors? The tallest indoor waterfall is in a Singapore. Where is the tallest outdoor waterfall? The tallest outdoor waterfall is in Argentina I have another question about a world record I can answer questions about any world record What is the record for most consecutive listens to the hit song Who Let The Dogs Out by the Baha Men? That record was set by Billy Beingborn on July 17, 2012. 1456 times I think I can beat that one if you do be sure to notify us so we can update our database