The analysis of the soil-structure-interaction is a very important part during all stages of planning, design and construction. Large urban construction projects create an impact not only on neighbouring structures but also on existing, sensitive underground structures, like metro and street tunnels. But not only new constructions have an effect on existing structures. Deconstruction projects may cause enormous displacements as well. For the analysis of the soil-structure-interaction in most cases numerical methods are necessary. For verification of the numerical simulations geodetic and geotechnical measurements according to the observational method have to be carried out. An outstanding large urban construction project on existing underground structures of the metro of Frankfurt am Main, Germany, is presented in this paper.