Kasarmikatu 21
| Building type: | Office building |
| Project type: | New construction |
| Systems used: | LK90ECO Window System |
| Architect: | Arkkitehtitoimisto Sarc Oy |
| Year of construction: | 2016-2017 |
| Building contractor: | YIT Rakennus Oy Helsinki |
| Developer: | HGR Property Partners, YIT, Ahlström Capital |
| Gross floor area: | 16 000 m2 |