You have a lovely garden Eric.
Are the scree, dried river beds and rock gardens natural or did you have to make them from scratch? We are thinking about making some as they are easier to maintain than ordinary beds. I have a couple of flower borders where I have laid slate to stop the weeds from taking over and it certainly helps.
We also intend making a pergola similar to the one you have. Is yours made with 3 x3 timber?
One final question Eric, what type of soil do you have and how big is your garden?
Thanks for the tour Eric, it has given us food for thought.