Katajanokan Laituri, Stora Enso’s head office building in Helsinki, has been named the winner of the 2025 International Award for Wood Architecture.
The building, designed by Anttinen Oiva Architects, is located at the Skatudd quay in Helsinki. Sweco is the building’s structural engineer.
Katajanokan Laituri reflects Stora Enso’s material portfolio. The load-bearing frame, with columns and beams, and the façade structure are made of veneer wood from Stora Enso’s factory in Varkaus, Finland. Interior walls, elevator and stair shafts, and floor and roof structures are constructed from cross-laminated wood from Stora Enso’s Grunön sawmill at Grums, in Värmland, Sweden.
Approximately 6,000 tonnes of carbon dioxide was sequestered during the growth of the trees used in the Katajanokan Laituri ’s wooden structures, and this continues to be stored in the building.
The Swedish Foundry in Malmö, designed by KjellanderSjöberg, was also nominated for the award.
’It’s great to see this trend, with increased interest in building in wood. In this competition we had nominees for projects that used existing structures, as well as nominees for entirely new projects,’ says Alexander Nyberg from Svenskt Trä, who is also a jury member for the International Award for Wood Architecture.
The International Award for Wood Architecture is awarded by the international press each year in recognition of achievements in the wood architecture sector. The award aims to encourage the development of an innovative wood architecture mindset.
Source of the lyrics: https://www.swedishwood.com/about_us/news/2025/2/stora-ensos-head-office-wins-architecture-competition/
Photo: Kalle Kouhia
Photo: Kalle Kouhia
Katajanokan Laituri
Helsinki, Finland, 2024
Katajanokan Laituri is a solid wood office and hotel building that sets an example in the possibilities of wood construction in a sensitive urban environment. As the first new building on the formerly industrial Katajanokka waterfront that directly connects to Helsinki’s iconic maritime cityscape, Katajanokan Laituri spearheads the transition of this embankment into an open urban space accessible to all. It continues the uniform, neo-classical silhouette of Helsinki along its southern waterfront, while the meandering shapes of its façade break its scale, connecting it to the diverse and layered building stock of the Katajanokka peninsula. A double-structure on the façade with an outer layer of glass, aluminum, and granite that protects the exposed wood structures from the maritime weather connects the building to the wider cityscape and gives it a unique character that changes with the time of day and the four seasons.
The building has four floors above the ground, a publicly accessible green rooftop terrace, and a basement that houses technical facilities and parking. The building was designed as the new head office of the leading Nordic forestry company Stora Enso, and half of it is occupied by a hotel. The street-level spaces connect to the surrounding city on both sides and feature a large, shared open foyer, restaurant, café, and conference spaces. The structural system and the design of the spaces allow for maximal flexibility and adaptability of the interior over a long lifecycle. The exposed spruce structures together with careful spruce and ash detailing exhibit the natural diversity of wood as a building material. The design of the interior has been guided by a preference for materials that are natural, sustainable, and will age beautifully. Besides wood, the Viitasaari gray granite used on the facades and on the pavement outside as well as inside connects the building to its urban environment. The outdoor spaces of the building are inspired by northern nature and feature a birch grove in the courtyard and archipelago meadows on the rooftop.
The project has been guided by the objective of minimizing climate impacts over a long lifecycle and making the best use of renewable resources and materials. The building’s above-ground structures utilize standard, industrial, prefabricated Stora Enso massive wood products customized for pioneering structural and architectural solutions. The post-beam frame and the structure for the façade are made of Laminated Veneer Lumber (LVL) produced in Varkaus, Finland. The inner walls and lift- and staircase shafts that stiffen the structure, as well as the floor- and roof structures, are made of Cross Laminated Timber (CLT) produced in Gruvön, Sweden. The entire frame consists of 7600 m³ of spruce and 2500 wood elements.
The building’s close proximity to the sea means that extensive flood protection measures have been implemented as part of the building project. As the first block redeveloped on the Katajanokka waterfront, this site spearheads the reactivation, reinforcement, and raising up of the entire embankment. It paves the way for a future permanent reconstruction of the embankment as a continuous public space from the Market Square to the tip of Katajanokka.
Timeline
Invitational competition 2020, completion 2024
Size
16 400 m2 (23 000 m2)
Client & Main users
Varma Mutual Pension Insurance Company; Stora Enso Oyj, Solo Sokos Hotel Pier 4
Project management
Haahtela-rakennuttaminen
Architect
Anttinen Oiva Architects
Interior architecture: Stora Enso premises and main lobby & Interior design: Hotel cafe
Anttinen Oiva Architects
COLLABORATORS
Structural design
Sweco Rakennetekniikka
Landscape design
Nomaji Landscape Architects
HVAC, Electrical and Life Cycle Planning
Granlund
Fire engineering planning
KK-Palokonsultti
Acoustic design
Akukon
Geo planning
Sitowise
Interior design, Pier 4 hotel facilities
Franz
Source of the Facts and image:
https://aoa.fi/works/katajanokan-laituri
Photo: Kalle Kouhia