This is the 18127th most frequent Russian word.
храмов
"Храмов" is the genitive plural form of "храм," meaning "of temples" or "of churches" in English.
Here, 'храмов' is the plural genitive form of 'храм', referring to temples in general and emphasizing their abundance.
В древних городах России сохранилось множество старинных храмов.
In ancient Russian cities, many old temples have been preserved.
In this sentence, 'храмов' serves as a possessive descriptor (genitive plural), indicating what type of architecture is being discussed.
Архитектура храмов впечатляет своей красотой и величием.
The architecture of the temples impresses with its beauty and grandeur.
In this instance, 'храмам' is the plural dative form of 'храм', indicating the tour included these temples as destinations.