Any fence that is erected within the city limits shall not be constructed of any type of metal guards and barbed wire, unless first being approved by the city council. No such fence shall be of a material that will limit or conflict with the value or appearance of abutting property in any way, and no fence shall be erected or maintained in such a manner as to unreasonably obstruct the view of others or their access to light or air. (1984 Code § 11B-1)