70 ILCS 1205/10-4
Any park district shall have the power to acquire by gift, grant or purchase, real estate and lands for use as a site for an armory and to convey, sell, donate, lease or rent real estate or lands so acquired and any real estate or lands now owned by such park district to the State of Illinois or to any proper agency thereof for use as a site for an armory, but the park district shall have no power to divert any gift, grant or legacy from the specific purpose designated by the donor.
Such district shall have power to acquire by lease or permit the right to occupy and use real estate, land and riparian estates for park and playground purposes and to improve, maintain and equip the same as a park or playground, and to place permanent buildings and structures thereon.
Such district may by ordinance lease, for any period not exceeding 99 years, any tract or parcel of land of the park district to any organization incorporated under the laws of this State as a corporation not for pecuniary profit, as a site for a memorial to the military and naval forces of this State and of the United States, provided that such organization shall be responsible for the maintenance of the memorial.
70 ILCS 1205/10-4