The board of county commissioners of Seward, Shawnee and Wyandotte counties may acquire by condemnation, gift, bequest, purchase or lease from public or private sources and may plan, construct, reconstruct, repair, remodel, furnish, equip, operate and maintain, and may lease to others for operation and maintenance, civic and other multi-use public facilities for the benefit of the people of the county. The facilities shall include all necessary buildings, access roads to connect with existing thoroughfares or interstate highways, parking facilities, concessions and other improvements deemed necessary by the board. The board may do all things incidental or necessary to establish public or private facilities, located upon, above or below the ground, for the types of functions and activities deemed suitable by the board.