I wasn't sure what to expect really apart from some drawings of people wandering round Barbury Castle in leather sandals, it was far more detailed and well thought out than that.
Jennie tackled the whole talk in a logical and interesting way, first of all stating that she does do lots of looking at ancient maps, aerial photographs and remains found at the sites she intends to reconstruct, but there's no real way of knowing how accurate a picture she is painting, and she probably isn't.
I did take photos, but the screen has made everything look a bit dark
Bowood House before Capability Brown began landscaping, seen below
It was a fabulous talk.