CN Tower EdgeWalk, Toronto, Ontario, Canada

• two 68,160-litre (15,000-imperial gallon) water reservoirs at the top, which are automatically replenished,
• a fire hose at the base of the structure capable of sending 2725 litres (600 imperial gallons) a minute to any location in the tower,
• a ban on gas appliances anywhere in the tower (including the restaurant in the main pod),
• an elevator that can be used during a fire as it runs up the outside of the building and can be powered by three emergency generators at the base of the structure (unlike the elevator at the Ostankino tower, which seriously malfunctioned).