Guardhouse

A guardhouse (also known as a watch house, guard building, guard booth, guard shack, security booth, security building, or sentry building) is a building used to house personnel and security equipment. Guardhouses have historically been dormitories for sentries or guards, and places where sentries not posted to sentry posts wait "on call", but are more recently manned by a contracted security company. Some guardhouses also function as jails.