It was built on the highest point in Sydney in 1858, so it’ll come as no surprise that one of the best places to admire the skyline and the cosmos above is from the Sydney Observatory (powerhouse.com.au; free). Home to Australia’s oldest working telescope, the observatory also highlights the deep connections between astronomy and Indigenous traditions through its thoughtful exhibits. Entry to the museum is free, and guided night tours run Wednesday to Saturday (adult/child $36/24), with special sessions for families with children over six. Be aware it’s a long and steep stair climb to the dome, but the ground floor exhibits and surrounding gardens are accessible to everyone.
The observatory was originally built to determine the correct time via astronomical observations. On the roof, a signal ball still drops at exactly 1pm. The hill was also used to signal to ships from two high flagpoles, one of which has been reconstructed. Research at the observatory ceased in 1983. Book tours a week ahead at busy times.
