1) Caption reads:  Niagara Falls, Canada. "The World's Honeymoon Capital." This panoramic view of Niagara Falls shows the American Falls (167 feet) on the left and the Horseshoe, aka Canadian, Falls (162 feet) on the right. The awesome roar of the Falls is caused by the sound of 4 billion gallons of water flowing over the top every hour of the day. In metric terms, this is 18 billion litres, or 18 gigalitres.

2) Caption reads:  A spectacular aerial view of Niagara Falls at dusk.