Triangle-shaped towers fitted with smart technology form the centre of Lahdelma & Mahlamäki Architects competition-winning masterplan for Helsinki.
The local architecture firm's development was chosen as the winning entry in the contest to execute a phased development of high-density mixed-use towers in Helsinki's Pasila district, north of the city centre.

Named Trigoni for the three-sided plans of the towers, the first phase of the Lahdelma & Mahlamäki's development will consists of one 180-metre tall and one 150-metre tall tower connected by a podium containing shops and restaurants.
Triangular plans, claimed the architects, will allow the towers to be slot neatly together on the site whilst being angled to prevent overlooking or blocking light from reaching each other. Windows on the corners will create multi-angle views for the homes, hotel rooms and offices inside.
Common rooms throughout the tower, such as one on the 49th floor of the tallest 51-storey tower, will give residents views over the city.
The two towers will be joined by a new public square, and "roof yards", private walled and sheltered gardens, will be situated on the tops of buildings.

The second development phase will see the rest of the old rail yard turned into a park and sports pitches with ten new buildings ? a mixture of high and mid rise ? around the perimeter. An existing railway roundhouse will turned into a cultural centre.

A smart system will be integrated througho...