Cluster of buildings and land used by an institution
A campus traditionally refers to the land and buildings of a college or university. This will often include libraries, lecture halls, student centers and, for residential universities, residence halls and dining halls. By extension, a corporate campus is a collection of buildings and grounds that belong to a company, particularly in the technology sector. Examples include Bell Labs, the Googleplex and Apple Park. Etymology. Campus comes from the Latin: campus, meaning "field", and was first used in the academic sense at Princeton University in 1774.
https://en.wikipedia.org/wiki/Campus