A sculpture garden is a garden that features outdoor art in a landscaped environment.  The most important aspect of the sculptures chosen is that they should be made from very durable materials.

For items in any outdoor garden remember this: Clay, granite and bronze age, concrete deteriorates. 

Sculptures or other items in your garden made from natural stone or bronze will actually become more attractive as they age.  Items made from concrete just look as if they need to be replaced. 

A sculpture garden is an outdoor garden dedicated to the presentation of sculpture, usually several permanently-sited works in durable materials in landscaped surroundings.

A sculpture garden may be private, owned by a museum and accessible freely or for a fee, or public and accessible to all. Some cities own large numbers of public sculptures, some of which they may present together in city parks.

Exhibits range from individual, traditional sculptures to large site-specific installations.

from Wikipedia, the free encyclopedia