06. Niagara Falls
When most people heard about these falls, they think that it is located in Canada. Well, these falls are actually at the border of US and Canada. These are undoubtedly one of the greatest falls in the world. It is amongst the most spectacular natural wonders on this planet. The Niagara falls are a set of three different falls I.e. American Falls, Bridal Veil Falls, and Horseshoe Falls. The first two are located on the American side. It is one of the most popular tourist attractions in the world with more than 14 million people annually coming here.