“When they realized what they were looking at here at Niagara Falls, their jaws dropped. It’s a full circle rainbow! You’ll want to see it, too.”

Posted by The Weather Channel on Thursday, May 28, 2015

No longer available… but have a look at

https://www.washingtonpost.com/video/national/health-science/360-degree-rainbow-spotted-over-niagara-falls/2015/05/29/d3603f74-0667-11e5-93f4-f24d4af7f97d_video.html