I'm starting with an empty area about 10 x 4 metres between sun lounge and observatory in front of living room window and facing roughly south. I have killed off most of the weeds and grass by covering with an old tarpaulin for a year or so. This has also stopped the ground from drying out and making it easier to dig. In addition to providing a path to the observatory, this will provide flowers and shrubs to see from the living room window. Plus a small pond and fountain. The latter is something I have been working on in 3D printing and plan to have something unique. Apart from the pond there will be planting areas and slabs and ornamental stepping stones.
I have removed most of the tarpaulin and started digging a hole for the pond. The latter is a pre-formed pond I bought from Amazon :-
Bermuda Sand Pre Formed Pond 128 x 84 cm.
Here are some photos of pond hole digging and the general area.