The Planning Board may authorize the creation of walks or trails within or through open space, together with minor accessory structures such as railings or platforms, in order that open space may be visited without damage by subdivision residents or others on foot. To this end, easements or other interests running in favor of such person may be established as part of any of the acceptable treatment of open space outlined in this section. If the open space is to be maintained other than by dedication to the Village, the Planning Board may require an open space easement running in favor of the Village as a condition of approval. The Planning Board, as a condition of plat approval, may establish such further conditions on the ownership, use and maintenance of such open space as it deems necessary to assure the preservation of such open space for its intended purposes.