This floor includes the Auror Headquarters, as well as multiple police and justice facilities. It also includes The Misuse of Muggle Artifacts, Improper Use of Magic, Wizengamot Administration Services, and Detection and Confiscation of Counterfeit Defensive Spells and Protective Objects offices.

This floor holds the offices for the Accidental Magic Reversal Squad, the Obliviator Headquarters, and the Muggle-Worthy Excuse Committee.

This floor holds the offices for the Beast, Being, and Spirit Divisions, as well as the Goblin Liaison office and the Pest Advisory Bureau.

This floor holds the offices for the International Magical Trading Standards Body, the International Magical Office of Law, and the International Confederation of Wizards (British seats).

This floor includes the Floo Network Authority, Broom Regulatory Control, Portkey, and Apparition Test offices.

This floor includes the British and Irish Quidditch League Headquarters, the Official Gobstones Club, and the Ludicrous Patents Office.

The Atrium serves as a lobby or reception room. In the center of the room, the Magic is Might monument can be found. This floor also includes the Security Desk, the Ministry Munchies cafe, multiple fireplaces for transportation via Floo, and twenty or so lifts to get to the other floors.

The research held in this department is confidential, and the workers are called Unspeakables, because they can't reveal to anyone what their work in the department involves. The offices on this floor are unknown to most, but include the Hall of Prophecy, the Death Chamber, the Brain Room, the Time Chamber, the Space Chamber, and the Love Chamber.