The Adelaide Botanic Garden is a 41-acre (16 ha) public garden at the north-east corner of the Adelaide city centre, in the Adelaide Park Lands. Adelaide Botanic Garden is one of three gardens that comprise the Botanic Gardens of Adelaide, the others being at Mount Lofty and Wittunga.
First set aside in Colonel William Light’s city plan for Adelaide in 1838, the Gardens were founded in 1855 and officially opened two years later. The garden’s design was influenced by the Royal Gardens at Kew, England and Versailles, France.
One of the garden's nineteenth-century directors was the botanist Dr Richard Moritz Schomburgk, brother to the German naturalist Robert Hermann Schomburgk. He was a major advocate for the establishment of forest reserves in the increasingly denuded South Australian countryside.
Amongst other scientific and educational displays of native and international horticulture, the gardens hold one of the world's only propagated Wollemi Pine trees.

See: http://en.wikipedia.org/wiki/Adelaide_Botanic_Garden

Credit for the excellent indoor Conservatory photo: amanabhslater, http://www.flickr.com/photos/pikerslanefarm/342912254