town planning
noun /ˌtaʊn ˈplænɪŋ/
  /ˌtaʊn ˈplænɪŋ/
(also planning, North American English also city planning)
 [uncountable]- the control of the development of towns and their buildings, roads, etc. so that they can be pleasant and convenient places for people to live in; the subject that studies this