CN Tower EdgeWalk, Toronto, Ontario, Canada

• a 24-hour emergency monitoring operation,
• 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),