Precinct

A precinct is a closed or clearly marked space which belongs to an organisation. Around some main buildings, such as a cathedral or college, is a space. This space may have other buildings in it, and usually has a wall round it. The whole area has one owner (such as the church). People may only come into the precinct if they are allowed: it is not a public space, even though members of the public may use it. For example, students and staff may enter a college, but visitors will have to give reasons at the entry.
The concept of a precinct is mediaeval. Towns, churches, palaces, colleges were places of limited access. They were surrounded by walls and guarded.