Kaisantunneli

The Kaisantunneli tunnel is a newly opened 220-meter long public tunnel under the Helsinki railway station, facilitating the movement of thousands of city residents in the area. Destia Oy was the contractor for the project, and WSP Finland Oy was responsible for the building design. The lighting has high requirements due to the guidelines of the city's public outdoor space and the track area of the railway environment. WSP's lighting designer Heini Myllyoja says that the main goal of lighting design is to take into account the tunnel's accessibility and safety needs, as well as urban values and architecture.

In the curved middle part of the tunnel, the border of the roof was illuminated in order to create a fresh and bright look, which lightened the ceiling surface and created the feeling of natural light in the underground space. The flexible VENUS  Side View IP67 was chosen for this. Heini says that with the lighting of the curved part of the Kaisantunneli, pleasant and even lighting has been sought so that it brings a calm atmosphere similar to natural light. The VENUS Side View with opal diffuser illuminates the niche between the ceiling and wall and perfectly emphasises the beautiful curved shape of the tunnel thanks to its laterally flexible form. The luminaires are installed with long-lasting and corrosion-resistant stainless steel brackets. The color temperature of the light is a warm white 3000 kelvin shade. The windows of the bike park have been highlighted with XOOLUM IP67, which creates a shop window-like atmosphere.

Overall, the lighting in the Kaisantunneli is calm, natural and refined.