Helsinki by arndalarm on Flickr.Via Flickr:
Entrance to an underground space around the Hartwall Arema in Pasila, Helsinki. 
Helsinki has a vast network of tunnels under the whole city, here is a link to a short CNN documentary on it

Helsinki by arndalarm on Flickr.

Via Flickr:
Entrance to an underground space around the Hartwall Arema in Pasila, Helsinki.

Helsinki has a vast network of tunnels under the whole city, here is a link to a short CNN documentary on it