The Test Garden of Hamma The Test Garden of Hamma, situated in the Hamma district of Algiers, is a lush garden, which extends at an amphitheater, at the foot of the National Museum of Fine Arts of Algiers, the street Mohamed Belouizdad to the street Hassiba Ben Bouali, on an area of 58 hectares (38 acres of gardens and 20 hectares of arboretum). Created in 1832, it is considered one of the most important test gardens and acclimatization in the world.