Located on the border between Queensland and New South Wales, it is Australia's highest intensity high-rise tourist destination. What city is it?

Gold Coast

Explanation:

Gold Coast is a city located in the eastern part of Australia, on the eastern coastline. It is located right next to the border line between Queensland and New South Wales. While it is not a very big city, it is a metropolitan area that is very well known and attractive, especially for tourists. There are several amusement parks in the city, it has beautiful long beaches, and it is in close proximity to the Great Barrier Reef. There's also a beautiful national park in close proximity, and multiple inland canals, all in all making it a very beautiful area in which there is lot to sea, experience, and enjoy in.