Niagara Falls, USA/Canada

Niagara Falls is the most visited waterfall on Earth, drawing over 30 million visitors per year across its three sections: the American Falls (21–34 metres high, 260 metres wide), Bridal Veil Falls, and the Canadian Horseshoe Falls (57 metres high, 790 metres wide), which carries more than 90% of the total flow. Average flow over the Horseshoe Falls is approximately 2,400 cubic metres per second during daylight hours in peak season. The Canadian side in Niagara Falls, Ontario offers the best panoramic vantage; the boat tours (Hornblower/Maid of the Mist) approach within metres of the Horseshoe base. Best visited April–October; illuminated at night year-round.