40 U.S.C. § 8733

The Secretary of the Interior may lease, for not more than five years, land or an existing building or structure on land acquired for park, parkway, or playground purposes, and may renew the lease for an additional five years. A lease or renewal under this section is— (1) subject to the approval of the National Capital Planning Commission; (2) subject to the need for the immediate use of the land, building, or structure in other ways by the public; and (3) on terms the Administrator decides.