The shell of the "Tholos" is constructed by armed cement, which is sheathed by stainless grid. The sphere is surrounded by metallic "rings" that contribute to the image of a celestial body, but are also useful in the lighting of the shell. The semi-circular screen (Dome Screen), where digital projections take place, is constructed by perforated aluminum leaves on a metallic frame and is based on a perimetric wall.
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The construction and equipment of the "Tholos" funded, as part of the Attica Regional Operational Programme of the 3rd Community Support Framework (with funding 50% by the European Fund of Regional Development and 50% by State Funds)