Remedies. Any building or structure erected, constructed, altered, enlarged, converted, moved, or maintained contrary to the provisions of this chapter, and any use of any land or building which is conducted, operated, or maintained contrary to the provisions of this chapter, shall be and the same is hereby declared to be unlawful and the City Attorney may, upon any such violation having been called to his attention by the Zoning Administrator, institute injunction, mandamus, abatement, or any other appropriate action to prevent, enjoin, abate, or remove such erection, construction, reconstruction, alteration, conversion, maintenance, or use. Such action may also be instituted by any property owner who may be especially damaged by a violation of this chapter.