arch in Adelaide forms an important part of South Australia's economy. The South Australian Government and educational institutions have attempted to position Adelaide as Australia's education hub and have marketed it as a Learning City. The number of international students studying in Adelaide has increased rapidly in recent years to 30,726 in 2015, of which 1,824 were secondary school students. Foreign institutions have been attracted to set up campuses to increase its attractiveness as an education hub. Adelaide is the birthplace of three Nobel laureates, more than any other Australian city: physicist William Lawrence Bragg and pathologists Howard Florey and Robin Warren, all of whom completed secondary and tertiary education at St Peter's College and the University of Adelaide. Adelaide is home to research institutes, including the Royal Institution of Australia, established in 2009 as a counterpart to the two-hundred-year-old Royal Institution of Great Britain. Most of the research organisations are clustered in the Adelaide metropolitan area: The east end of North Terrace: SA Pathology; Hanson Institute; National Wine Centre. The west end of North Terrace: South Australian Health and Medical Research Institute (SAHMRI), located next to the Royal Adelaide Hospital. The Waite Research Precinct: SARDI Head Office and Plant Research Centre; AWRI; ACPFG; CSIRO research laboratories. SARDI also has establishme