Hello how may I help you? Where is the tallest indoor waterfall in the world The Cloud Forest in Singapore has the tallest indoor waterfall in the world. How tall is that waterfall?\ The waterfall is 35 meters tall. Where is the tallest outdoor waterfall? The tallest outdoor waterfall in the world is Angel Falls in Venezuela. How tall is that waterfall. The waterfall is 807 meters tall. Has anyone ever jumped 807 meters from that waterfall and survived I'm sorry, I am not equipped to answer that question.