Geodesic, ecologic and soil investigations and design documentation for the project were prepared by GORPROJECT (Russia), NIIOSP (Russia), Petrochim-technologiya LLC (Russia) and Trest GRII JSC (Russia). In planning and executing works at the underground cycle, piling and producing construction materials such companies as Arabtec (UAE), Bauer Group (Germany), Geostroy CJSC (Russia), Inforsproekt CJSC (Russia) and Renaissance Construction (Turkey) take part. Verification calculations, working documentation development, optimisation of processes and technical supervision are performed by Arup Group Limited (Great Britain), Samsung C&T (Korea) and Lend Lease Project Management & Construction (Great Britain). Project management is being done by AECOM (USA). Exclusiva Design (Italy) is key contractor for the interior design of public spaces. German company Josef Gartner is in charge for the glazing of the skyscraper. Glazed facades of Entrance Arch as well as parts of Multi-functional building are done by Waagner-Biro.