This article is devoted to the electronic project Itinera Petri: A Day-by-Day Bio-Chronicle of Peter the Great (1672-1725). This is an online database representing the life of Peter I in the form of electronic records, each of which corresponds to one day in the life of the monarch. The uniform presentation of the material follows a fixed format with the goal of separating facts from interpretations. The database is equipped with a searchable interface organized according to different parameters (including by toponyms and personal names).