Section 2503. Powers and duties of commissioner

Except  as otherwise
  provided by law, the commissioner shall have the power and duty:
    (a) to plan, acquire, design, construct, improve and manage facilities
  for the conduct of cultural activities by the city and,  to  the  extent
  possible,  to  use the resources of other agencies to perform design and
  planning functions subject to the approval of such agencies;
    (b) to plan, develop, conduct and supervise such cultural  activities;
  and
    (c)  to  foster  coordination  among city, state and federal agencies,
  other organizations and institutions with respect to cultural activities
  in the city.