Modern acoustic solutions for the historically significant Olympiasali
Located in the Kellotorni (Clock Tower) of Helsinki Central Railway Station, Olympiasali was acoustically improved using Ewona acoustic products. Olympiasali is a striking and historically valuable event venue where unique architecture meets modern event technology.
The hall is part of the Helsinki Central Railway Station designed by Eliel Saarinen — one of Finland’s most iconic buildings. An acoustic solution implemented in such a historic environment required exceptional attention to detail both technically and visually.
The high vaulted ceiling, large open surfaces, and the proportions of the space created acoustic challenges for events, seminars, and celebrations. The goal was to improve the acoustic environment without compromising the original atmosphere or architectural character of the building.

A striking ceiling installation as part of the architecture
For Olympiasali, a visually impressive suspended acoustic installation was designed to function both as an acoustic solution and as an architectural feature within the space.
The black, custom-cut, geometrically arranged Premium Max acoustic elements create a modern contrast against the hall’s light architecture while blending seamlessly with the venue’s event technology structures.

Additional acoustic solutions included:
- Ewona Wool 100 mm sound absorption solution installed beneath the stage
- custom enclosures using Premium + acoustic panels printed to match the venue’s colour scheme
Particular attention was given to preserving the protected historical environment and the original architecture of the space throughout the design process.
The acoustic solution helped to:
- reduce reverberation
- improve speech clarity
- increase overall comfort
- preserve the spaciousness and visual impact of the hall
A better acoustic environment for events and audiences
Thanks to the acoustic solution, the sound environment of Olympiasali became more controlled and pleasant for both speakers and audiences. The solution supports the versatile use of the venue for seminars, corporate events, and celebrations.
As reverberation was brought under control, speech intelligibility and the overall atmosphere of the space improved significantly.

Acoustics designed on the building’s terms
The entire solution was designed to respect the unique architecture and historical surroundings of Olympiasali. The end result is a modern and visually striking acoustic installation that supports the venue’s use as a contemporary event space.
The goal of the project was to combine highly effective acoustics with a visually lightweight implementation in a historically valuable environment.