I have placed some town houses at the corner of the layout.
There is a small waterfall where the water leaves the lake. Some canoers try to get their canoes past it. The canoes and canoers are old figures from my childhood. I don't remember if they ever had paddles, but at least I can't find any paddles now. It looked too awkward to have them go canoeing without paddles, so I arranged them like this instead. I have used no special material for the waterfall. It is just shaped with putty and painted. The bridge is made of matches and small branches from real trees.
A close look at the castle ruin:
One of my SJ V5 diesels. Here I have temporarily laid out a K track to improve the realism.