This Division 2 applies to all cities and villages incorporated under this Code and to any city, village or incorporated town organized under a special charter if such city, village or incorporated town has, prior to, on or after the effective date of this Code, adopted the provisions of this Division 2 as provided herein.
     The corporate authorities of the specified municipalities have the power to make such local improvements as are authorized by law, by special assessment or special taxation of contiguous property, or by general taxation, or otherwise, as such corporate authorities prescribe by ordinance.