On Sat, 9 Aug 2003 15:08:30 +0100, Andrew P Smith
wrote:

The stations on the Helsinki underground are, Stockholm too IIRC. Lisbon
underground stations certainly are.

Merseyrail (Liverpool) isn't - but for some odd reason the tunnels are
always much cooler than the outside temperature. I would guess this
would have to do with the loading gauge (more or less full main-line
size - not to mention the hugely impressive and cavernous James St
station), and possibly its position in relation to the water table
providing some cooling?

It is reputed that a recently-refurbished Merseyrail unit has been
fitted with aircon, but I haven't seen confirmation of this so I'm not
sure where it will lead.

Similarly, Hamburg's U-bahn is not air-conditioned, but despite being
close to the surface the stations are generally at a reasonable
temperature.

Neil