Sydney, Australia.

Sydney is the largest city in Australia with a population of approximately 4.5 million people hit the city's attractions, including beautiful beaches and bays. The location of culture, such as the Sydney Opera House, etc. The city is ranked 10th in the world and Mercer also noted that Sydney is a city with a cost of living high as 15 percent of the world, Sydney is a city that large. in Australia has a population of approximately 4.5 million people hit the city's attractions, including beautiful beaches and bays. As well as cultural attractions such as the Sydney Opera House, and so is the world's 10th largest city in Mercer also noted that Sydney is a city with high living costs as well as 15 of the world.