What term refers to large imposing buildings that often house significant offices or functions?

The term "edifices" refers to large and imposing buildings that are often designed for significant functions, such as government offices, banks, or cultural institutions. This word conveys a sense of grandeur and importance associated with the architecture and purposes of these buildings. It highlights both the physical structure of the building and its status within a community or society.

In contrast, "structures" is a more general term that can apply to any kind of building or construction, lacking the specific connotation of grandeur or importance. The term "monuments," while it can describe significant structures, typically refers to buildings or statues erected to commemorate a person or event rather than general large buildings with important functions. Therefore, "edifices" is the most appropriate term to describe substantial and prominent buildings that serve significant roles.