The “Conquering the Universe” mosaic on the Faculty of Mechanical Engineering at the Slovak University of Technology in Bratislava stands as a visionary piece of public art. Created by academic painter Dezider Castiglione in 1962, this bold work forms the front of one of four projecting lecture halls on the main facade facing Freedom Square. Each of these protruding volumes features its own monumental mosaic, highlighting a different theme from the technical and scientific ideals of the time.

This mosaic dedicated to space exploration presents a stylised satellite, reminiscent of Sputnik, moving along its distinctive orbit. The composition places the sun in the centre, with a blue segment indicating the Earth on one side. These elements capture the era's excitement about cosmic discovery and reflect the immense pride in scientific achievement prevalent in 1960s Central Europe.

Thousands of coloured stone tesserae were meticulously set into the concrete surface to compose the mosaic, blending artistic innovation with the era’s engineering ambitions.

The building itself is a hallmark of 1960s Slovak modernism, designed under the direction of architect Martin Kusý. It stands out for its clear, rational layout and its crisp, balanced forms — qualities emblematic of the modernist drive for efficiency and harmony. The rhythmic projection of four lecture halls breaks up the facade’s geometry, providing a dramatic architectural setting for the mosaics and reinforcing the building’s civic and educational significance within Bratislava’s urban landscape.

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