Any city in the state of Kansas shall have and is hereby vested with full power and authority to acquire, by gift, purchase or condemnation, sites, and to own, construct, maintain, operate or lease out docks, wharves and river terminals; to provide suitable buildings and equipment for the accommodation of passengers and for the handling, storage, transportation and delivery of freight, express and mail; to make suitable charges for its services; to provide adequate police protection, and from time to time, by ordinance, to establish such rules and regulations and to employ such agency or agencies as may be needful and proper to carry out the powers hereby granted.