Eternum is a modern building belonging to RWS Investment Group. It is located in the centre of Gdańsk next to the European Solidarity Centre. It is a glazed building with service and office premises, rising to eight storeys. Particularly noteworthy is the ceiling in the entrance hall and reception area, decorated with unusual lighting in the shape of thin cylindrical pipes ending in LED spotlights. The whole gives the impression of stalactites arranged at different angles. The project was created by the studio APA Wojciechowski Architekci, and the lighting contractor is the company Luxiona Poland, which used its product Tytan Stalactite Slim in a special, modified construction for installation in such a ceiling.