How do you know whether or not McDonalds is still serving breakfast? Well, usually you just check your watch. If it's earlier than 10:30 am, they are. If it's later, they aren't. Pretty simple. But what if you don't have a watch? Don't worry — one Chicago McDonald's has you covered.

Every morning at the McDonald's across from Wrigley Field, a gigantic, robot egg cracks open to reveal a yolk that says "Fresh Eggs Daily." When breakfast time is over, it closes back up until the next morning. Unfortunately, it's not paired with a robotic cow that gets its throat cut to reveal "Fresh Beef Daily" in its spraying blood, but I guess that's less appealing than a cracking egg.

Atelier 29, via PSFK