Iowa Code § 461A.34: Powers in municipalities.

Municipalities, or individuals, or corporations organized only for the purpose of establishing a park, acting separately or in conjunction with each other, may establish parks outside the limits of cities. If a park is established without the support of the public state parks fund, the municipalities, corporations, or persons establishing the park, as the case may be, shall have control of the park independently of the executive council. However, none of the municipalities, individuals, or corporations, acting under the provisions of this section shall establish, maintain, or operate any such park as contemplated in this section for pecuniary profit.