(2) For such purposes the department may, by purchase, gift, devise, lease, condemnation or otherwise, acquire property, real or personal, or any interest therein, including easements in airport hazards or land outside the boundaries of an airport or airport site, as are necessary to permit safe and efficient operation of the airports or to permit the removal, elimination, obstruction-marking or obstruction-lighting of airport hazards, or to prevent the establishment of airport hazards. In like manner the department may acquire existing airports and air navigation facilities; provided it shall not acquire or take over any airport or air navigation facility owned or controlled by a municipality of this or any other state without the consent of the municipality. [Formerly 492.050]