The City Council may acquire real property for current or future use as a public park and may designate any real property owned by the City for public park purposes. The City may acquire and establish a city park with less than a fee interest in land so long as the interest so acquired by the City is consistent with and ensures use of the property for its designated park purposes. City parks may be established or designated for active or passive recreational use, historic, cultural, openspace, ecological or habitat preservation or any other specific purpose so designated by the City Council.