Diar City compound maquette in Egypt The Diyar City mockup was implemented for Hillstone Real Estate Investment Company in the Central Highlands in Mokattam by architects specialized in the manufacture of scale models with more than twenty-five years of experience at City Scale Company for architectural models and maquettes. It achieved great success when it arrived and was presented to visitors. The model was manufactured within 35 days, with a drawing scale: of 1/75 scale and dimensions: of 170 cm x 65 cm.