The design of new investments with underground floors in the downtown urban fabric calls for determining its impact on existing, often historic, neighboring facilities. The article presents the results of own research on 3D spatial arrangement numerical modeling of this type of investment. The scope of the research includes the analysis of neighboring buildings (including historic buildings), construction of the 3D numerical model, and calibration of the subsoil model taking into account the actual results of geodetic measurements. Own research as well as the completed housing development complex in Poland, downtown Warsaw, including data from project design and implementation documentation serve as the basis for research and analysis. As a result of said research and analysis, it was found that 3D computational models allow mapping of actual impacts within the designed new buildings and neighboring buildings, and as consequence - after appropriate calibration - a good reflection of soil displacements in the area of the planned investment. The knowledge of the anticipated values of soil displacements related to erecting new buildings is necessary at the design and implementation stages to ensure safety in all phases of works of existing buildings.

The 2022 FIFA Men’s World Cup in Qatar was held in eight stadiums. It was a unique event in many ways, including the fact that seven (out of eight) new stadiums were built specifically for the World Cup. The result was modern facilities, both in terms of their attractive and innovative architectural design and the structural, technological and infrastructural solutions.
The 2022 World Cup was treated as a priority project that would spearhead extensive publicity and promotion of Qatar. For this reason, all venues were spatially and architecturally designed according to a shared set of principles. In particular, they were designed with reference to the key elements that constitute the identity and cultural heritage of the Qatari community.
One important common feature of all the stadiums is that they were designed with the community’s sports infrastructure needs in mind, even after the end of the World Cup. For this reason, partial dismantling and a reduction of the volume of the facility, or complete demolition of the facility, was taken into account during the design stage.
The aim of this paper is to analyse the architectural features of the sports stadiums of the 2022 FIFA World Cup in Qatar, to identify the general design principles and considerations and to provide conclusions on the architecture of these facilities.
The case study was used as the primary research method and the scope of the study covered eight sports stadiums of the 2022 World Cup in Qatar.
The research was conducted by studying and analysing documents, papers, and promotional materials, etc. related to the 2022 World Cup from online sources.