The outside of the HOUSE before we moved in

Here the boys are outside while we visited.
This is one half of our backyard.
I have no idea what this fruit is and it drives me nuts. I thought it was a plum at some point but..? We have a peach tree and also what looks to be a granny smith apple tree.

Sorry there are not many shots of anything else. I haven't taken very many pictures that were worth posting.