It was created for Expo 67 to celebrate Canada 's centennial .
Notre Dame Island was built in ten months from 15 million tons of rock excavated for the Montreal Metro underground rail in 1965 .
Notre Dame Island was created for Expo 67 to celebrate Canada 's centennial .
Notre Dame Island was built in ten months from 15 million tons of rock excavated for the Montreal Metro underground rail in 1965 .