Budget Travel magazine has a list (CLICK HERE) of what it calls the world's "10 Most Beautiful Waterfalls."
It ranges from a waterfall-rich lake region in Croatia to Niagara to Angel Falls in Venezuela to Iguazú Falls on the Argentina-Brazil border. It also mentions the waterfalls of Yosemite, which flow eternally in photographs but which can dry up in the fall. My wife and were there once in September and we saw no falling water.
The photo here is of a waterfall just outside Ithaca, N.Y. Its water will eventually reach Cayuga Lake, one of New York's celebrated Finger Lakes. This is a great region to visit whether you're in pursuit of wine, waterfalls, auto racing (at Watkins Glen, about 40 minutes from Ithaca) or a taste of the Ivy League. (Cornell University has a dairy that makes first-rate ice cream.)