Something amazing happens when the highest tides in the world arrive in Saint John, New Brunswick. Twice a day, tides in Canada's Bay of Fundy rise as high as 56 feet in places – the height of a 5-storey building! In Saint John, New Brunswick, the St. John River drains into the Bay of Fundy. When the Bay of Fundy tides rise and fall, 100-billion tons of water … a volume equal to ALL of the world’s rivers … enters and exits...