1. Sydney Showgrounds: Queen performed at the Sydney Showgrounds on April 30, 1977, during their "A Day at the Races" tour. This was their first concert in Sydney.
2. Hordern Pavilion: Queen played at the Hordern Pavilion on May 1 and 2, 1977, as part of the same tour.
3. Parramatta Stadium: They returned to Sydney for a performance at Parramatta Stadium on November 9, 1982, during their "Hot Space" tour.
4. Eastern Creek Raceway: Queen's final concert in Sydney took place at the Eastern Creek Raceway on November 28, 1985, as part of their "The Works Tour."
It's worth noting that these are just a few examples of Queen's performances in Sydney, and they may have had additional concerts in the city during their active years.