Sydney is a city of Australia . This city known as the Habour City , it is the oldest and largest city .Among the world's most beautiful and liveable cities becaus this place is very comfortable, comfortable and has beautiful views.Home to the Sydney Opera House and the Sydney Harbour Bridge has air conditioning in all buildings and on most public transport.Sydney has the wonderful weather all year round (summer: sunny, clear sky; autumn: warm; winter:cool; spring: the most beautiful season) . There are also many activities here for tourists: Going to the beach, sunbathing, bush walking, cycling, visiting famous structures,..