A lovely sunny day to bond and stroll with the family indeed! By "hitting 2 birds with 1 stone", you enjoy intimate moments with your loved ones as well as gain new learning experiences from the surrounding excavation work and from your twin sons who are civil engineers! Isn't that wonderful? It's certainly a great joy to witness the construction process at its initial phases - the assembly of the structural components for the site's critical foundations.
May I know what type of building function they're constructing in that area @marcosmilano71?