Space ship?

This "spaceship" appears to have landed in Wynyard Park in Sydney. It allows light in to the underground entrance to Wynyard railway station.

I think it's rather elegant, and "Parisian", matching the nearby AWA tower / mini Eiffel Tower, which dates from 1939.

It was Australia's tallest building until 1958. It has a viewing platform which is no longer open to the public. AWA was a communications company and it was a radio transmission tower.