Hard question to answer.
One layout that I remember, but I wont say inspired me was "Otogo" I think that the owner was called Jack? rabbits popping out of the hill, TPOs dropping off and picking up mail, etc..
In the same hall was.
Garsdale road, lovely it had it for me, I wanted to have my locos like them, all red and running in a real setting.
Kendal Castle, the last great project. By this time I had got to know David (RIP) and this was one of the layouts that had got me up into 7mm. All I wanted to do was to be able to build locos that would look that nice.
Dewsbury, by Bob Essery. fine scale to be worked up to.
I have a fourth one but I cant say, we're only allowed three.
OzzyO.