The widest waterfall in the world: The Khone Falls
Though the Chutes de Khone, or Khone Falls, may not be the most visually stunning of waterfalls it is the widest waterfall in the world by far. The falls measures 35,376 feet wide. The next widest is Pará Falls which is a measly 18,400 feet wide. In other words, the Khone Falls is nearly double the width of its closest competitor.
The Khone Falls in Laos is the reason that the Mekong river isn't fully navigable into China; there is simply no floating down these powerful falls and rapids that stretch down 69 feet of river, including a 45-foot drop. About 410,000 cubic feet of water rush down this waterfall every single second.