The Montreal Botanical Garden is a large botanical garden in Montreal, Quebec, Canada comprising 75 hectares (190 acres) of thematic gardens and greenhouses. It is considered to be one of the most important botanical gardens in the world due to the extent of its collections and facilities.It serves to educate the public in general and students of horticulture in particular, as well as to conserve endangered plant species. The grounds are also home to a botanical research institution, to the Société d'astronomie de Montréal,and to the Montreal Insectarium; offsite, the Garden staff also administer the Ferme Angrignon educational farm and petting zoo.