10 of the best: Natural wonders - 4. Niagara Falls, Canada/USA
The wow factor: Straddling the border between Canada’s Ontario province and America’s New York State, Niagara Falls comprises three waterfalls – Horseshoe Falls, the American Falls and the Bridal Veil Falls – over which the Niagara River plunges up to 188ft (57m). Although not the world’s highest falls (there are about 500 taller waterfalls in the world), Niagara’s cascades have the highest flow rate of any waterfall. Around six million cubic feet (168,000 cubic metres) of water thunders over the falls every minute in high season, with the flow reaching up to 68mph (109kmh) at the crestline. www.niagaraparks.com, www.niagarafallsstatepark.com
Did you know? Niagara Falls is eroding at the rate of one foot (0.3m) per year and has moved back seven miles (km) in 12,500 – making it the world’s fastest-moving waterfall. At the present rate, Horseshoe Falls will erode back about four miles over the next 15,000 years, after which it will hit soft shale and the falls could be replaced by a series of rapids.
Experience: A four-night package from Frontier Canada, with two nights’ deluxe accommodation in both Toronto and Niagara Falls, includes return Toronto/Niagara Falls transfers, sightseeing tour of Niagara Falls and Niagara-on-the-Lake and a Maid of the Mist boat trip to the base of Horseshoe Falls. Prices start from £385pp. A falls helicopter trip is £85 extra. www.frontier-canada.co.uk