Sydney is the largest, most populated, and most iconic city in Australia, just above Melbourne. It is located on the East Coast of Australia in new South Wales and is a coastal city.
It is also famous for the Sydney Harbour Bridge and Sydney Opera House (which is a landmark in Australia).
There are also other buildings in there, since it's a city.
History
Basically the Europeans and their convicts went there and they were forced to build the city.
The Sydney Opera House
It is the most iconic part of the city. If you take all the parts of it and join them together, you get a perfect circle.
Other buildings
IDK they exist.