ABSTRACT
In this chapter dealing with uncertain information about spatial urban objects is described. Authors are using examples from works of two connected projects: HOUSe project on Warsaw's urban space and the European Historic Towns Atlas series on the Magdeburg volume. The three major uncertainties of space, time, and function and continuity, are discussed. Furthermore, ways of solving problems with uncertainties in both projects are presented. Final remarks offer possible ways of expanding solutions in the future during the HiSMaComp project.
