Wow that is a marvel of architecture! The mortar lines between the bricks are solid and I love the augmentation on top too.
So great that you are getting son time and realizing early on it is a gift. Think a little about how you might have 16 summers with him if you are lucky, how many have passed and how few are left. Don't suffer your imagination of the future though....just keep cherishing the sand castles to the maximum as they happen.
Oh for sure man. Now that he's the age he's at now I have to remind him as well as myself that we need to slow down. There's no need to rush into getting older because it doesn't get easier. I'm trying to cherish the sandcastle building and snuggles as much as I can! One day they will stop as they should but it will be a bittersweet moment.
The jazz at the top was really cool I agree haha