Attributes of the outstanding universal value of Kazan university astronomical observatories

Since 2003, UNESCO has been actively promoting an initiative to include monuments related to astronomical heritage in the World Heritage List. One of the potential objects within the framework of this initiative could be observatories of Kazan University – the historical building of the observatory of Kazan Imperial University of the 19th century and the complex of the country observatory named after V.P. Engelhardt (1901). The article provides a detailed description of these objects, the justification of their outstanding universal value, considers possible criteria of value within the framework of UNESCO nomination rules, as well as the authenticity and integrity of the astronomical objects nominated.