This was the week of world-wide coincidences that could only happen thanks to the wonder of the Internet. Now that so many are sharing photos online, people are beginning to find interesting "correspondences":

Two strangers took different halves of the same rainbow at the same time:

Two tourists took the same shot of an obscure bridge from a difficult vantage point, 20 years apart:

Two strangers took a photo of the same sunset in New York: