Sydney Sanitarium opened in Wahroonga on 1 January 1903 with a bed capacity of 70 and was known as a ‘home of health’ and as a place where people learned to stay well. The original Hospital building was designed by Dr Merritt Kellogg, brother of Dr John Harvey Kellogg. The Sanitarium became widely known as the ‘San’, and today, many years after its 1973 official name change to Sydney Adventist Hospital, it is still colloquially referred to as ‘the San’ Hospital.