The article presents three houses with underground vaulted structures from three historical monuments located in the pre-imperial part of Historic Center of Chisinau. Unfortunately, the access to the underground part of the buildings was possible only in the case of a remarkable house with a vault from the Petru Rareș street. The selection of houses was made during the study of three-quarters of the historic city. Selected objects are among the most interesting in terms of the typology of underground spaces.