The Botanical Garden Rea  was launched in 1967 as a private institution by Giuseppe Giovanni Bellia, owner of the San Bernardino di Trana Nurseries, who in the Seventies developed collections of exotic plants, particularly cacti, experimented with new hybrids for ornamental plants, minutely explored Val Sangone searching for rare or little noted plants. In 1989 the Garden was purchased by the Regione Piemonte and became an integral part of the Museum of Natural Sciences of Turin.
With the renewal of collections and the broadening of activities, the significant past of the Rea Botanical Garden was fully restored and, by using the tools of modern museology, now offers a significant means for botanical research, teaching and dissemination. Over 2000 types of plants from all over the world are cultivated in the Rea Garden. 
The collection of wild Piemonte plants has been considerably increased in recent years, particularly for the study and reproduction of rare species.

Extra closure in the event of severe weather, high winds or snowfall.