When taking photographs it is important for the photographer to establish dimensional perspective of the subject.
Take a look at this model steam engine.
The humans in the foreground of the photograph accentuates the enormity of the steam locomotive that sits on display at the train station in Havre, Montana.
Locomotive number 2584 was acquired in 1930 by the Great Northern Railroad from the Baldwin Locomotive Works for service on the Empire Builder Line running between Chicago and Seattle.
The president of Baldwin, Samuel Vauclain, claimed this was the most powerful steam locomotive built at the time. It was operated for passenger service up to 1947 then pulled freight until retired in 1955.