Railways in Sydney on 9 December 1926 with the first suburban electric service running between Central station and Oatley on the Illawarra line. In the same year, the first underground railway was constructed north from Central station to St James in Sydney's central business district. Electric trains that had previously terminated at Central station continued north, diving underground at the Goulburn Street tunnel portal, stopping at Museum station and then terminating at St James. Other lines were soon electrified. Also, in conjunction with the construction of the Sydney Harbour Bridge which opened in 1932, an additional four-track underground line was constructed from Central
Tourism in Sydney cruiser . It is a dynamic park, offering both a retreat from the city and a lively cultural centre, featuring public events, live music, and other performance art. The Royal Botanic Gardens are the largest of three major botanical gardens open to the public in Sydney. Admission is free and it is open to the public every day of the year. Taronga is the city zoo of Sydney, officially opened on 7 October 1916. It is located on the shores of Sydney Harbour in Mosman. Taronga is linked to Dubbo's Western Plains Zoo in terms of breeding programs. Taronga Zoo