New York Consolidated Laws, General Municipal Law - GMU § 73. Cities and villages may hold property in trust for certain purposes

Real and personal estate may be granted and conveyed to the corporation of any city or village of this state, to be held in trust for any purpose of education, or the diffusion of knowledge, or for the relief of distress;  or for parks, gardens, or other ornamental grounds, or grounds for the purposes of military parades and exercise, or health and recreation, within or near such incorporated city or village, upon such conditions as may be prescribed by the grantor or donor, and agreed to by such corporation;  and all real estate so granted or conveyed to such corporation, may be held by the same, subject to such conditions as may be prescribed and agreed to as aforesaid.