One of Sydney's jewels, overlooking the famous harbour and the Opera House. Originally the site of the colony's first farm, the Royal Botanic Gardens date back to 1817, making them the oldest scientific institution in Australia. Today, the gardens cover 34 hectares and include a succulent garden, a native rockery and national herbarium with more than one million plant samples, including those collected by Joseph Banks in 1770. The adjoining grassed area, the Domain, is used for recreating, picnics and outdoor concerts. http://www.rbgsyd.nsw.gov.au/