The city may permit and authorize the following uses of parks, which are lawful uses of any grounds or premises dedicated as public parks, unless the use thereof for such purposes is forbidden by the terms of the conveyance creating such parks:
(1) The erection and construction of memorial monuments and buildings.
(2) Pioneer memorials and pioneer museums.
(3) Memorials and monuments to United States war veterans.
(4) Buildings for meeting places of pioneer associations or veterans upon any public park within the limits of the city.