Wiktionary
cultural patrimony
n. Objects possessing continuing culture, traditional, or historical importance to the heritage of a group, particularly those considered inalienable by the group as of the time the objects had been separated from the group or from the historical setting of the objects.
Usage examples of "cultural patrimony".
To the Athenians, these were a kind of cultural patrimony - something like the original handwritten copies and first folios of Shakespeare might be in England.