I will suggest two zones:
1. Douglas is the only town in the world with horse trams. I suggest a zone at the northern end of the line, outside the depot, where you can look at the old trams. This is also the station for the old electric railway.
2. The great Laxey wheel ("Lady Isabella") is another famous attraction.
www.manxnationalheritage.im/attractions/laxey-wheel/
Of course I could recommend much more interesting places, but I do not know if there would be of any interest.
