This is a castle so we don't have a dolls' house: we have a dolls' castle.
A different meaning to the term "kitchen garden": part of the formal garden was the kitchen range of the castle hence these windows.
The locomotive in the foreground is called Broughton Castle in memory of GWR loco 5033 Broughton Castle which worked from 1935 to 1962. The name plate is preserved in the tea room.