Office building Aviatica, whose name refers to the production of aircraft engines in the former factory complex was this area, is located on the southeastern part of the area in close proximity to Radlicka street. The 5th floors oval shape of the object follows the street line and the floor plan in the shape of a horseshoe hides a through-passage courtyard with elements of landscape design. The distinctive horizontal mass of the object is accompanied by a pair of oval towers that are visible from afar, the lower roof of the building is designed like green terraces. Functional use of the building is mainly administrative, complemented with services and shops on the ground floor. The two-stores underground basement serves for locating technical rooms, warehouse and garage. On the first floor is located business units, services and restaurants, office space and a central control room. From the second to ninth floors there is office space prepared for tenants with their individual requirements, and the size of the offices can be flexibly adapted to the needs of individual tenants. Construction design solution combines a reinforced concrete column frame with a steel frame structures of towers; the extension four floors towers have ovoid shape in plan going beyond the shape of lower volume and these overhangs are reinforced with steel trusses repeating facade from the lowest level of towers. Spatial rigidity of the building is provided the four of reinforced communication cores. An interesting feature of the project is the foundation for which was applied the construction method using anti-vibration mats because the building is located in close proximity to the subway tunnels as the dominant source of noise and vibration. The shell of building is a system of aluminum profiles with glass-ceiling and horizontal ledges in place of connection to floor slabs. Aviatica is certified with international standard LEED Gold, and thanks to the full energy management while maintaining maximum comfort of the internal environment the project consumes the energy for building operation approximately 50% lower than comparable buildings. Further savings (over 45%) is achieved in the management of drinking water through the use of rainwater to flush toilets and install energy-efficient plumbing fixtures.