The Greek mythology tells us the story of EOS – the goddess of the dawn. Every morning she rose to the horizon from the depths of the sea, in order to bring the light of the day to people. The project, named after the goddess, is situated at the front line in Chaika neighborhood, in the marine capitol of Bulgaria – Varna, with only the Sea Garden and the Black Sea located in front of it, ensuring that the building is the first one receiving sunlight. The main challenge was to create a design that fits in a restrictive triangle-shaped plot, which was the datum for its shape in plan and its distinctive spatial-volume structure. Whiteness and horizontal distribution are typical for the buildings in this area and they completely match the studio’s manner of work. The final result is a building that has a distinguishable silhouette and is open for various associations and interpretations. Functionally, the apartments were designed in a way that allows all of the inner spaces to have orthogonal forms. Only the loggias facing East have triangle shapes. A construction challenge was the prestressed concrete balconies in the sharp part of the building, reaching up to 8 meters in length on the upper floors. EOS is a building where it was thought not only of aesthetics and functionality, but of the building’s longevity, too. The façade materials are chosen to guarantee long life, easy maintenance with low energy costs, as well as high living comfort – aluminum frame windows, highly selective glazing, fiber cement ventilated façade.