By day or by night, the huge twining bands of water that comprise Niagara Falls arch like liquid glass over the edge to produce a vast plume of spray from the cauldron that is thrown into the air hundreds of meters above.
In terms of volume these falls are unbeatable, with more than a million bathtubs' worth of water plummeting downwards every second.
Around the falls a huge number of tourist attractions have accreted. Napoleon's brother brought his bride here, and while some businesses cater for families, lovers of extremes, of nature and adventure, others cater for romance, honeymoon visits and more.
With everything from themed water parks to sex shops, botanic gardens, butterfly conservatories and casinos within a short distance, the weather doesn't much matter, especially as the falls themselves are impressively spectacular whatever the season.
Where are they?
The Falls are on the Niagra River. Connecting two of the five Great Lakes, this creates a natural international border between America and Canada. The falls are served by two distinct cities; Niagara Falls Canada and Niagara Falls USA.
What are they?
The 50th tallest waterfall in the world, actually three huge waterfalls, of which the American Falls and Bridal Veil Falls are in America and the Horseshoe Falls in Canada.
Best time to visit?
There's no really bad time to visit as it depends on what you want from your visit. Summers are warm, winters are cool and spring and autumn are quietest. You can't do the Maid of the Mist boat ride to see both countries in the winter and can't stand behind the Horseshoe Falls in the summer.
If in season, take the Maid of the Mist Boat Ride to see Niagara Falls from both the American and Canadian sides. This includes a ride along the Horsesheo Falls, a trip up Skylon Tower and a wet and wild cruise. If out of season take a 'Close-Up' journey and stand in the mist behind the Horseshoe Falls.