Mich. Comp. Laws § 455.308

Sec. 8. Any municipal corporation, by vote of its governing body, may transfer to any such corporation in trust as hereinbefore provided, the management and control of any real property held by it, for the purpose of laying out, maintaining or carrying on parks, playgrounds, boulevards or pleasure drives, and may by like vote revoke the said transfer to such corporation and re-vest the management and control of said property in its own officers, at any time it shall be for the public benefit so to do.