I guess I am not so young and eager anymore. I agree that as beautiful as it looks, it looks most like a lot of work to me.
Someone asked me if I'd seen a garden I'd like to have. Sure, there are plenty of fantastic gardens - gardens with assistants, students, or paid workers that keep them pristine. Working alone, I'm thinking I'll be happy with my own gardens.
The design is modified formal. Formal with all stiffness removed. Few if any straight lines. It would go well with a Queen Anne style or art deco house especially well, or maybe that european cottage style house. And the view of it. It's designed to be viewed from up high, probably as well as from ground level. Looks like it makes a nice merge with the neighbor yards too.