The central premises of the Federal Criminal Court in Bellinzona are distinguished by the special design of the four Hall domes which define the identity of the building significantly. The architectural design uses the incident by central skylights sidelight to produce an impressive depth effect of organic grace a slender, minimal plastic modulation of concrete surfaces. The perforation and plastic depth of ornaments act not only visually, but also provide a pleasant room acoustics. Materialized in concrete the ornamented panels are also an integral part of the static structure of the halls, which gives them a tectonic power and presence.