Realizations Back BTB office building in Siemanowice Śląskie Realizations Żory Falubaz stadium in Zielona Góra School Katowice Opole Wrocław Apartaments XYZ Szczyrk Kindergarten in Sosnowcu Commercial and residential building in Bielsko-Biała Kindergarten Rybnik Boguszowice Wastewater treatment plant in Tychy