Sutherland Falls spills over the side of Lake Quill in the jagged, glacier-carved landscape of Fiordland National Park on New Zealand’s South Island. For years, it was believed to be the tallest waterfall in the world, thanks in part to a rough estimate by Scottish explorer Donald Sutherland, the first European to see the falls. Later, more scientific surveys proved this estimate to be significantly inflated, but Sutherland Falls is still 1,900 feet tall, which is plenty high in our book.