Sydney extend the system through the CBD by 2024. At the time the Sydney Harbour Bridge opened in 1932, the city's ferry service was the largest in the world. Patronage declined from 37 million passengers in 1945 to 11 million in 1963 but has recovered somewhat in recent years. From its hub at Circular Quay the ferry network extends from Manly to Parramatta. Sydney Airport, officially "Sydney Kingsford-Smith Airport", is located in the inner southern suburb of Mascot with two of the runways going into Botany Bay. It services 46 international and 23 domestic destinations. As the busiest airport in Australia
Tourism in Sydney is home to over 2,600 animals on 28.7 hectares, making it one of the largest of its kind, and it divided into eight zoogeographic regions with numerous indoor pavilions and outdoor exhibits. Taronga Zoo has about 340 different species of animal, and are housed in a large variety of exhibits. Sydney Wildlife World is a zoo in the Sydney CBD. It officially opened in September 2006. It is located on the shores of Darling Harbour and is attached to Sydney Aquarium. Sydney Wildlife World is unusual for a zoo in that it is entirely enclosed and air-conditioned. The indoor zoo