Submarine in the Park?

It wasn't even a park. It was just a... I don't know what that place was either. It's with green grass where we walked over to the other side of Walmart. Pinky didn't even know what to describe about this thing sitting in the middle of nowhere. It couldn't be a one-man submarine, could it? It was so weird. Was it a steel porcupine? And what's with the direction pointers? North, south, east and west. What the heck was that? I'm very curious. I just wish someone could tell me what that was. It was in Shenzhen, somewhere near Walmart.