Snow clearance in Helsinki is a virtual military operation. Every 10 seconds, a trunk arrives, dumps the snow and leaves. Only with this sort of precision can they keep the city moving in the depths of winter.
Unlike many of its European neighbors, Vantaa Airport stayed operational throughout winter. It prides itself on having an infallible maintenance program. Thanks to the specialized fleet of machines, this slick operation can clear a runway in as little as four minutes.
Helsinki has barriers that have restricted its growth. On the one side, there are the existing buildings, but then you have the water. So, between the buildings and harbor, there really is only one place to go - down below.
That's exactly what they are doing to avoid urban sprawl and maintain the low-rise cityscape.
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