Section 7-700. Grant of power

For  the purpose of promoting the health,
  safety, morals, or the general welfare of the community,  the  board  of
  trustees of a village is hereby empowered, by local law, to regulate and
  restrict  the  height, number of stories and size of buildings and other
  structures, the percentage of lot that may  be  occupied,  the  size  of
  yards,  courts and other open spaces, the density of population, and the
  location and use of buildings, structures and land for trade,  industry,
  residence  or  other purposes.   As a part of the comprehensive plan and
  design, the village board is empowered by local  law,  to  regulate  and
  restrict  certain areas as national historic landmarks, special historic
  sites, places and buildings for the purpose of conservation, protection,
  enhancement and perpetuation of these places of natural  heritage.  Such
  regulations shall provide that a board of appeals may determine and vary
  their application in harmony with the general purpose and intent, and in
  accordance with general or specific rules therein contained.