The Night Vale Hall of Public Records is an institution storing documents and issuing various permits and licenses for Night Vale residents. Getting any kind of license seems very difficult and the building itself is a maze. 
It is described by Cecil as "one of the most secure and dangerous places in Night Vale". All public records, including the Registry of Middle School Crushes, are kept in the Hall of Public Records where the public cannot see them. This is also the place where entities who want to be considered legally existing should register at, as did the angels.