Cued to start at 29:01, just before they show the French gardens:
It’s “The Great Gate of Kiev,” from Mussorgsky’s “Pictures at an Exhibition.” Has nothing to do with French or English gardens.
Uh, no, don’t think it is. I 'm familiar with Mussorgsky’s work.
Sounds a lot more French than Russian, to me anyway.
It is originally by Purcell, but most people will be familiar with it from Britten’s use in his Young Person’s Guide to the Orchestra.
Here it is in Moonrise Kingdom: