hole in the wall

Yup, I literally have a hole in the wall of my house:

Why? Well, a big part of the reason is that the hole used to contain this attractive chunk of metal:
... which was once an air conditioner/heater. Too bad it showed no signs of life, and it's also too bad that it weighed about 150 pounds. My dad and I def. went to town on it with my sledgehammer... now I just have to figure out how to make my wall impervious to cold and small animals again.