Notre-Dame cathedral: Firefighters tackle blaze in Paris
For those asking about why there isn't visible water being sprayed on the fire... There's no point. Any firefighting efforts are focused on preventing the spread of the fire to other structures (potentially other parts of the same structure)As a rule of thumb, the water flow necessary to extinguish a burning structure is the volume of the structure (in feet) divided by 100. The resulting number is (in rough numbers) the amount of water you need, in gallons per minute. For a fire this size, you're looking at tens of thousands of gallons of water per minute. It's just not possible.