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People who like reply on Helsinki Moves Underground. With Underground Master Plan - a first in the world- city expands to underground

    Keith Keloe
    Keith Keloe on Helsinki Moves Underground. With Underground Master Plan - a first in the world- city expands to underground (): Good development, though I do not understand how a 'first in the world'...

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    cover tunnel photo by: Matt Brown from London, England / CC BY

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