I’ve been waiting for something like WorldCam to come along. Instagram is a crazy wealth of visual info but so difficult to search and aggregate. This helps.
Also, the Facebook HQ is pretty much exactly what you expect it to be.
WorldCam zeroes in on just about any given location—your favorite restaurant, your competitor’s offices, a famous landmark, Fast Company HQ—to reveal on-site Instagram intelligence, with pinpoint accuracy. It’s kind of like Google Earth, only with Instagram feeds instead of satellites.