[ianpurton]

Steam.

[herbst]

I am pretty sure you cant do that near any modern city because of the smog. Or sure you could, but not if you care about a nice city image.

[needusername]

http://www.brienz-rothorn-bahn.ch/en/experience/railway.html

[herbst]

This kind of proofs my point. This thing is a mountain train, there are not cities that could be considered big on the way at all. Its also a nice experience :)