Helsinki Cathedral hosts Helios through 1 November

Helsinki Cathedral hosts Luke Jerram's Helios from 1 October to 1 November 2026 in Helsinki, bringing a seven-metre artwork into the neoclassical church. The installation is linked to the Tulkoon valo! theme month, whose October programme examines mental wellbeing and mental health.

Helios remains at Helsinki Cathedral until 1 November

Helios is a large illuminated representation of the Sun by British artist Luke Jerram. The installation combines detailed solar imagery, sunlight and a soundscape created by Duncan Speakman and Sarah Anderson.

The work is scheduled at Helsinki Cathedral from 1 October to 1 November 2026. The operator's event page lists the installation and the church as its venue, while the programme listing gives the address as Unioninkatu 29, 00170 Helsinki.

Jerram's artwork is part of Tulkoon valo!, a recurring discussion and culture programme organised by the Helsinki Cathedral parish. In October 2026, the theme is mental wellbeing, with art, music, discussions and services connected to the installation. The theme month announcement places the programme at the cathedral and gives its period as 1 October to 1 November.

Helsinki Cathedral gives the Sun installation an historic setting

The church was completed in 1852 as the main building of Helsinki's Empire-era centre. Carl Ludvig Engel designed the cathedral, and Ernst Bernhard Lohrmann continued the work after Engel's death.

The central dome rises above a white neoclassical facade on Senate Square. That architectural setting changes how Helios is encountered: the installation's solar imagery is presented inside a nineteenth-century Lutheran cathedral rather than in a conventional gallery. The cathedral history page records the building's completion in 1852 and its place in the Empire-era centre.

Visiting Helsinki Cathedral: what travellers from Western Europe should know

• Helios is scheduled at Helsinki Cathedral from 1 October to 1 November 2026, at Unioninkatu 29 in central Helsinki.
• The installation is presented inside the cathedral. The operator publishes separate visitor information, and access arrangements may differ when church events take place.
• The venue stands on Senate Square, the historic civic centre of Helsinki, and the operator identifies it by the address Unioninkatu 29, 00170 Helsinki.

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Frequently asked questions about Helsinki Cathedral

When does Helios take place at Helsinki Cathedral?

Helios is scheduled from 1 October to 1 November 2026 at Helsinki Cathedral in Helsinki.

What is Helios at Helsinki Cathedral?

Helios is Luke Jerram's seven-metre illuminated representation of the Sun, combining solar imagery with a soundscape.

Where is Helsinki Cathedral and how do you get there?

Helsinki Cathedral is at Unioninkatu 29, 00170 Helsinki, beside Senate Square in the centre of Finland's capital.