One of the many Niagara Falls attractions is the Horseshoe Falls where the Niagara River plunges 54 metres to the Maid of the Mist pool below. There are many viewpoints for tourists to see the Niagara Falls in Ontario, Canada including a trip to behind the falls. View the falls from the Skylon Tower which also gives an impressive view of the surrounding area. The crestline of Niagara Falls is estimated to be around 675 metres wide.